Seriously! I need help! This is starting to piss me off!

If you are flabbier and run a lot and have a big deficit, it's possible you are losing too much lean mass while you lose weight. The body likes to use muscle for fuel, no doubt! If you think that could be it, lift some weights and eat for them, especially protein. Just look up how to preserve lean mass as you lose, in other words.

If she were losing more muscle she should be losing more weight, not gaining weight.

If this is a sudden and unexplained weight gain, I'd suggest seeing a doctor. While prolonged undereating can cause your metabolic rate to slow, it will not happen overnight and will not be dramatic. It will happen slowly and make it gradually harder to lose weight.

This sounds like it could be a food intollerance or hormonal disorder or some other condition that can be identified and managed.

That is what I was going to say!

if I had to guess, I'd say your measurements when logging food are pretty far off. 1/2 cup of milk? that's 4oz, barely more than two swallows for me. 1/4 cup of general tso's chicken? That's two tablespoons... that can't be right. that would be like one and a half pieces of chicken. They may be accurate, I don't know you . I'm just saying they seem like they're not. You're basically nibbling all day.

i would also say that more than likely your diary isn't accurate....meaning you are likely eating more than you think.

it's an interesting read

http://www.aworkoutroutine.com/starvation-mode

Are you drinking plenty of water daily

http://www.myfitnesspal.com/topics/show/975025-in-place-of-a-road-map-short-n-sweet?hl=roadmap+short+and+sweet&page=1#posts-14891590

Read the first post of this thread, as it explains the TDEE-20% method of weight loss. Trust me, it really works!!! It will give you more calories to eat & makes sure you get adequate protein. If your protein intake is high enough & you add in some resistance training, you'll burn fat without burning a lot of muscle. I've lost 57 pounds & only 10% of that weight loss has been lean muscle mass. Your protein intake should be AT LEAST 1 gm/pound of lean body mass or alternatively 0.8 gm/pound of weight. For most women that is 100-125 grams of protein/day as a MINIMUM. I'm now 160 pound & 5-8 and eat at least 135 grams of protein/day. In fact, on Sunday I ate 205 grams of protein!

Once you figure out your calorie requirement, DO NOT eat under that goal & expect to lose weight. Eating below you BMR (basal metabolic rate) is always wrong, as your BMR only accounts for basic body functions for survival. Your TDEE (total daily energy expenditure) is what you burn in a day. If you eat at TDEE, you should maintain your weight. If you eat at a deficit to your TDEE, you will lose weight, hence the idea of TDEE-20%. As you get closer to your goal, your deficit should get smaller. Eating at a deficit of >20% should ONLY be done under the guidance of a physician! And as a physician myself, I will add that most physician do not have adequate training in nutrition & weight loss. You need to be under the care of a physician who specializes in weight loss, such as a bariatric physician in conjunction with a well trained dietician.

One other point, a weight loss rate of 1 pound/week is ideal & sustainable. In the very beginning you may lose more due to water loss, but pushing for greater weight loss (unless you are morbidly obese & under a doctor's care) is not advisable or sustainable.

I'm 5'3.75'' and below 130 lbs so we should have roughly the same caloric needs - 1200 is about right. Now if you are eyeballing your food then there's a chance you're eating well into your 1400/day which will bring you too close to maintenance - let's say 1550 - and at a 150 calorie deficit a day you'd need about a month to lose a pound. My maintenance is 1580ish.

I'm 5'3", 42 years old, and at maintenance weight of 110 pounds since June. My basic maintenance calories are right around 1550, and I started Couch to 5K 9 weeks ago (yes, I'm nearly done!). On days that I run, my calorie needs shoot way up to 2000 calories.

Eat more. Seriously.

I looked at one day of your diary. but I did look at your goals. and what you actually did. I don't think you know what you're doing. you're eating carbs and not eating fats and proteins. basically, you're carbo-loading for your running and starving your body of nutrition (fats and protein). most of your diet is fruit and grains. so yeah you're going to get some weird responses from a body trying to survive what amounts to lots of stress (running) and abuse (no nutrition).

go to one of the keto calculators and reset your goals on calories, fats, proteins and carbs and then GET TO THE GOALS. switch your emphasis from low calorie to low carb and increase your intake of fats and proteins dramatically then see what happens after a month or so.

I run and swim and I would never eat what you eat.

^^Smart!

If you are that active you should be ingesting at least 1500-1800 calories a day. Try changing the percentage of your carbs, fats and proteins. My trainer has me eating 1800 calories a day on the days that I do both strength and cardio training. On the days I complete just strength training I usually eat right up to 1500 calories a day. Also make sure you are eating 6 small meals (including snacks a day.) Getting enough sleep every night is also extremely important.

Okay I know this post is two months old. I stepped away to try the smarter suggestions. I come back and last I read are what are obviously automatic responses, or things people say when they won't read. Let me restate this: THIS IS A 3 YEAR LONG ISSUE GOING ON. (someone made a remark that weight loss is slow for beginners; 3 years ain't a beginner).

I started in 2010 at 150 lbs
My lowest was 123 in 2012
By April 2013, I ballooned from 125-135 in ONE WEEK

It's been that way since. Forget this forum, I'm going to the doctor.

there is 2 options: you either have a medical problem, so going to the doctor is a good idea.

OR there is a fundamental flaw in your counting i.e. there is something you are missing consistently in your logging (vegetables, condiments, stuff in tea/coffee, night time secret eating, refills of wine) or your are just not burning the calories that you think you are burning for a variety of reasons.

Have you had your BMR tested to see whether it is actually as high as it is assumed?

regardless, good luck and I hope you get it sorted out :-)

Okay I know this post is two months old. I stepped away to try the smarter suggestions. I come back and last I read are what are obviously automatic responses, or things people say when they won't read. Let me restate this: THIS IS A 3 YEAR LONG ISSUE GOING ON. (someone made a remark that weight loss is slow for beginners; 3 years ain't a beginner).

I started in 2010 at 150 lbs
My lowest was 123 in 2012
By April 2013, I ballooned from 125-135 in ONE WEEK

It's been that way since. Forget this forum, I'm going to the doctor.

Going to the doctor is a good idea. I think someone suggested that because of the quick weight gain. It's good that you are using MFP's diary, because the doctor may want to see your tracking. There are some days missing, do you track elsewhere?