What do you think?

You need to track your food intake. Here is what you do.

1) Open your diary to the public.
2) Log your food.

I guarantee you that you are eating too much. The whole "I ate 600 calories a day" thing doesn't cut it. If the doc says there is nothing wrong with you then calories in vs calories out applies.

It's not difficult. Log your food...eat under your maintenance and you will lose weight.

i agree with the above, open your diary, log your food, be consistent, be precise. Get a food scale and weigh your food. Stay at it vigorously and conciously for days, weeks and months and if you have any questions or things don't seem to be going well? Come back and ask more questions with your diary still open so we can help you out mid-track. Best of luck.

Agreed with the above responses. Good ideas. Log everything. There are calories in nearly everything, so be very diligent.

Also - Cut more calories. Eating less always works. Don't go so far as 600 cal/day... Get a baseline of good logging of food/quantities, and you should find a balance where you start losing weight. It is possible to eat very little and still not lose fat. You need to force your body to use stored calories due to your eating less than your body needs. So long as you are above essential body fat levels (10% to 13% for women), your body will burn fat when you have not eaten enough during the day. For me, I know I am burning fat when I feel hungry 2 - 3 times during the day before meals (and then I wait a bit before the meal or snack).

One sure way to start losing fat is to eat below your BMR. You can calculate your BMR here:
http://www.bmi-calculator.net/bmr-calculator/

Put in your stats, and check your BMR. This is the amount of calories your body needs if you do nothing all day but rest. You can add activity multipliers (20% up to 100%) depending on how active you are during the day (excluding exercise), but if you eat at your BMR or slightly below, and you have more than the minimum essential body fat amount (5% for men, 10% - 13% for women), your body will use stored fat to make up the calorie differences.

3,500 calories = 1 lb of fat. If you have a daily deficit of 500 calories/day (equals 3,500 calories per week) under the amount of calories you burn, your body will convert 1 lb of stored fat into energy.

If you eat below your BMR, don't go more than 250 cal/day below - that would put you at a 0.5 lb/week deficit, PLUS a deficit for not adding your activity multiplier (at least 20% of your BMR). For the first 2 - 4 weeks, try eating at your BMR and watch if your weight starts going down.

If you go over today, try to go under tomorrow. Splurge for Thanksgiving (a little bit), then skip breakfast on Friday and eat a small lunch and dinner to try to balance your excess. Look at your weekly calorie intake graph (on a mobile device, I don't think it's online) and it will tell you how much you were over or under your goal for the week on Sunday. Always try to meet your goal at the end of the week, and don't stress if you go over one day.

And calorie estimates are ESTIMATES. So if you are not losing weight and meeting your goals, then cut more. You will find a place where you will start to lose fat. Be patient and look at overall weight trends, not day to day fluctuations.

Good luck! Don't get discouraged. You can do this!

And do eat back your exercise calories, or at least part of them. Just living you burn about 80 cal/hour (divide your BMR by 24 hours). So while you may burn 500 cal doing 60 min of exercise, really your additional calorie burn is more like 500 - 80 = 420 cal.

If you are not feeling hungry after a cardio workout, push off your next meal or snack longer... It's okay.

To me it sounds like PCOS or a thyroid issue - I would suggest telling all of this to your GP and asking them to run checks.

Despite exercise and a great diet, people with these issues (especially thyroid issues) can gain weight as your thyroid directly influences how your body uses the food you give it.

Hair Loss can be attricuted to these things - however, hairloss on a 600cal diet is not uncommon at all - and how quickly it happens depends on the individual - however - if it was no a 'nutritionally complete' 600cal diet - losing hair will start much quicker.

I suggest seeing your GP before such extreme dieting again - if you do have a hormone issue, extreme dieting can be one of the WORST things you can do in the long run.

I do understand your frustration - especially since there is so much information out there ("eat carbs!", "don't eat carbs but eat fat!", "Eat fat but don't eat tomatoes!" etc), and you really don't know what to do.

I've not been on here that long, about six months, but I can tell you that there is sound advice here on MFP. Just looking at the past few days i see a lot of eating out, which is a lot of sodium and fat. I don't know how much you are actually burning at the gym - those "gym computers" are not very accurate, neither are the MFP estimates. So it's a possibility that you are underestimating your intake and/or overestimating your exercise, which, combined with too much sodium could lead to you not losing/gaining.

here's what you do:
start today by weighing everything you eat. don't guess, don't 'sort of'. weigh everything.
Log everything you eat.
exercise is important but you are going to lose the weight in the kitchen so that is where your focus should be.
try to eat real food that you make - fresh salads, fresh fruit, chicken etc.

you can do this.

Had a look at your last few days, and I noticed too that your sodium levels are high, that could cause you to hold on to water. I was in a similar spot a couple of years back and it turned out I was ill.....didn't know this until I was in pain! now on meds for ulcer and IBS since getting that sorted and joining MFP and eating sensibly I have lost a lot....I believe mainly water from my poor swollen guts that were so inflamed and irritated. Go back to your doc as losing hair is not right....I did but that was due to my iron levels being almost zero with my ulcer.

Are you weighing all your food? I noticed a HUGE difference in my portion sizes when I started weighing. What you think is a portion can quite easily be double what a portion should be, which means double the calories.

You need to persist until you find a Dr who will - even if it means going to a naturalist or an integrative practitioner - who doesn't look at masking symptoms, but fixing their cause. Your health is worth perusing & if you say a Dr doesn't take you seriously, then, it sounds like you know already it may be more than just your diet and exercise - Its worth finding one who will

some thoughts/suggestions

6 ounces of chicken seems pretty tiny. That's like 1/2 a breast. You're certain that you're tracking accurately? It looks like you eat out a lot, and if you're not eating out then you're eating the same old thing at home. Its much easier to control what you eat if you're cooking more.

TBH I find some entries hard to believe - two slices of a big cheese pizza has to be more than 340 cals. Americans pizzas are HUGE and I know that our much smaller serves are usually 200cals/slice. Anyway. I flicked through a bunch of entries and it was pretty much:

breakfast - eggo waffle & chocolate almond milk

lunch - either chicken & frozen veg or some kind of fast food

dinner - either chicken & frozen veg or some kind of fast food

Get some variety in there

ALSO you seem to just use a bunch of 'homemade' recipes that are in the system. How do you know what they put into their recipe? Try entering individual ingredients or creating your own recipes. And maybe try to get a bit more creative in the kitchen. I'd be put off eggo waffles (whatever they are??) for life if I ate them every single day.

I don't know what tests were done. Doctors don't take me seriously, I do believe that. Even when I said, it was hard to lose weight before my daughter, but at least I could. If I go back and look at the results what would the hormones be under?

If they tested Thyroid it would be listed as TSH - some labs have different names for their tests but you should be able to pick them up fairly easily. My doctor blew me off for 13 years (he just kept saying I was hypothyroid and nothing else) but turns out I have Hashimoto's AND a rare subacute thyroiditis - go figure.

However, you can still lose weight with it (I am currently now that it is controlled - somewhat)

I don't mean to eat out that much, but my problem is I am on the go all the time. My daughter is home schooled and so we are all over the place all week. I have decided that I have to stop this eating lunch at 3:30 thing. That can't be good. I need to figure out how to do that without eating out. I live in a very warm state, so even with a cooler I don't know if I would trust stuff in my car.

As someone who works over 10 hours per day, has 3 kids, 3 dogs, 2 cats and husband - it can be done. I weigh everything and pack my meals accordingly. Even during baseball/softball season (talk about on the go lol) I carry my cooler with me.. You just have to find out the easiest method for yourself. For me, I cook a bunch on Sunday and get it measured out for my week.

I haven't been weighing my stuff this time, but I did in the past so I know roughly what a serving should be.

That is a major problem. Doesn't take that long to weigh it in grams and get an accurate measurement. I know it isn't perfect but I feel pretty comfortable in my intake.

As far as some radical diet - unless you have an intolerance, then don't deny anything just make it fit into your day.

You should never be at 600 calories. I'm sure you realize that now.

I agree with others. LOG every single bite that goes into your mouth, every single day.

I've been in between 240-270 for almost my entire life - since about age 16-36. My weight spiked up to 307 once but came back down pretty easily with exercise and barely changing my diet. HOWEVER, it felt like no amount of exercising or trying to eat healthy would get my body below 260 in my thirties. It was VERY frustrating. ESPECIALLY when I started dating my now-husband and followed his healthy eating habits and saw very little improvement in my weight. Or when I stopped eating beef etc, and friends doing that lost 50+ lb quickly and I lost like 7 lb in 5 months with a MAJOR dietary change.

I also remember in high school believing there was something really, really amiss with my health and/or metabolism as some weeks I would eat tons of fast food, cookies by the bag, etc, and weigh 237 and then eat salads and skip a few meals and weigh 241. I started to believe that for me it didn't matter if I ate healthy or not because I was still going to be fat and not lose weight normally. I believed that for years.

But seriously...despite all of this, MFP worked for me. I have been doing it since March 25, 2013 and have lost EXACTLY 1.57 lb per week averaged out. Even though some weeks I didn't lose any weight or just 1 lb, it averages out to the 1.5 lb loss that MFP "claims" for me...I am a believer. Give it a shot and just do not give up!!

Tracking consistently for three months can help you identify patterns and their causes.

OK, I made it public. I was eating very clean for months, but I gave up.

I have had a bad few days. I ate a wrap because I thought it would be "better" and I was off for instance. But my calories are still decent.

My husband has lost 30lbs since May, and I just want to cry, because nothing is happening for me. We are both eating and doing the same things, though he is eating a heck of a lot more than me!
I know I don't have the diary to back me up, but I followed the Wheat Belly diet for months and the scale did not budge. When I was down to like 600 calories I was losing hair by the handful. That is what freaked me out into eating again.

Eating clean means nothing. You can eat too much 'clean' food just as easy.

Count.Calories. Log.Religiously. Weigh.Everything.Don't over estimate your exercise burn.

I'd try bumping up your calories to like 2000 for a few weeks (ideally with some good protein like grilled chicken breast, lite tunafish, turkey, etc) and see if anything changes. If you're accurately logging, it seems like your calories are pretty low.

Who knows though. Some people swear you can eat 500 calories a day and you'll lose weight and some people swear if you go below your BMR your body will go into starvation mode.

But according to your logs I'd say you are pretty certainly on the too low side if anything.