Not losing and even gaining!

I just looked at a few days of your diary, but on those days you were eating very little during the day and taking in about 50% of your calories for dinner. That kind of pattern can mess up your body chemistry and it can make it very difficult to stick with an eating plan over the long term. It also can cause blood sugar spikes and then crashes, and can make you crave carbs or sugar. (If I tried to go all day on 500 - 600 calories, I'd be ready to kill someone and eat them by dinnertime). Could you try spacing your calories out evenly throughout the day? You might have more energy (and be able to work out longer/harder).

Meal timing is irrelevant. I eat a majority of my calories in the evening and have been fine.

Interesting. I was wondering if I needed to try to focus on not only how much and what I was eating but also WHEN I was eating them.

Honestly, that was the very first thing that jumped out at me. It might take some planning to get used to having more food available during the day, but other than that it's a relatively easy adjustment to make, and it would go a long way to help stop any carb cravings. Also, could you bulk up your breakfast and lunch by adding veggies? A lot of your early meals seemed like they would be pretty small, volume-wise, as well. Adding veggies to eggs or a salad in addition to what you're eating for lunch wouldn't add many calories at all, but it would help you feel fuller longer (and make it easier to stick to your eating plan).

Interesting. I was wondering if I needed to try to focus on not only how much and what I was eating but also WHEN I was eating them.

In terms of weight loss, meal timing is irrelevant. The only way the timing of meals is relevant is in terms of sticking to your calories. If it is not the natural way you eat, then you will eventually compensate, and that usually means eating way too much or giving up completely. If generally don't eat until noon or even later, and my calories are weighted toward the end of the day. I tried the 6 small meals a day spreading out my calories, and that just made me ravenous all the time so I had a difficult time sticking with my calorie goal.

In short, eat whenever it works for you, but stick to your calorie goals.

In terms of a 4 pound gain, it is likely water weight if you are measuring your food carefully and are confident that the foods you are eating match the calorie information on the nutrition information label on food packages, then I would say you are just experiencing the annoyance of water weight. For some people is will stay on for a while, with now weight change or sometimes a gain, then suddenly in a space of days they will lose a whole bunch of weight.

As mentioned by others, taking measurements of your body other than weight, and taking pictures are almost a must to add to tracking your progress.

This may be helpful as well http://www.myfitnesspal.com/topics/show/1080242-a-guide-to-get-you-started-on-your-path-to-sexypants

You say you are walking 45 minutes 3X per week. Is this new? If you were sedentary and just recently started walking, you are increasing muscle mass. This is good weight to gain, since the more muscle mass you have the more calories you burn at a resting rate.

She is not gaining muscle by walking sorry

It's frustrating for sure but give it time.. or at least that's whaty I've had to do. I hit it hard and logged religiously for1.5 months down 1 up 1 down .5 even up .75 etc... then all of a sudden it started dropping consisently. This has happened to me a couple of different itmes. It jsut seems like it take a while for my body & metabolism to catch up with each other.

After reviewing your diary I noticed you are not eating a lot fruits and vegetables for breakfast or lunch. Maybe instead of eating a breakfast bar you could try fruit and yogurt or a vegetable omelet? For lunch swap the burger for a garden salad with chicken or some fish and steamed vegetables. Aim to eat a serving of fruit or vegetables with every meal and see if you notice a difference on the scale. (I think you will!)

I am sticking to my calorie intake...MFP says to eat 1330 cals to lose 2lbs a week (goal is 70lbs this year) or 1570 cals to lose 1.5lbs/.

Those numbers sound to high. Assuming a "typical" female height, having that much excess fat is going to put in the 45%-50% body fat neighbourhood. That will give you a "lightly active" TDEE of around 1900-2000 calories/day. To get to 2 lbs/week loss, you would have to drop your eating to 1000 calories/day.

Ignore this, please. Do not drop down to 1000 calories.

Aye, yikes, yes, PLEASE ignore the first post. IF TDEE is 1900-2000 cals, then "aggressive" weight loss would be -20% of that number (around 1600), NOT -50%. Sheesh..doling out advice to eat 1000 cals a day. Stop it!!

Meal timing is irrelevant. I eat a majority of my calories in the evening and have been fine.

Ditto. I usually eat the bulk of my calories at night and I'd say its working for me just fine.

So you lost 3 pounds super fast. Way faster than expected for your diet. Obviously, you did not lose 3 pounds of fat or combination of fat and lean body mass in 1 week. An unrealistic and inaccurate assessment of your progress. You gained 4 pounds in a week. Again, you didn't put on a real 4 pounds of fat or fat and lean body mass in a week. You would have needed to eat at a ~2000 calorie per day overage to get that. You report eating 1400 calories per day. No one thinks you mis-measured your food that badly. You didn't accidentally eat 3400 calories when you thought you were at 1400. Obviously, this is an unrealistic and inaccurate assessment of your progress.

You expect to have lost about 2 pounds of weight. How can you measure between -2 and +2 pounds of weight change when your measurement variation is off by probably a couple pounds. Your measurement tool is too inaccurate to tell you about such a small change over such a short period of time. Quite frankly, changing your program from such suspect data is probably going to hurt you more than help you. This is how people come to such bad conclusions and get de-motivated.

You can do a few things to fix your measurements. You have to weigh yourself at the same time in the same state each day. If you weigh yourself with your underwear only after peeing, right after waking up one day and then after eating breakfast with 16oz of coffee wearing a sweater the next day, you're going to see a massive error. An error bigger than the 1 or 2 pounds your trying to detect. If you do something based on this flawed measurement, you're going to make a bad choice. Even if you get the methodology right, your going to have natural variation. Salt or bowel movement or metabolic things like your cycle. I might do something like weigh 3 days and take the lowest or take the middle or the average. Or use a 3 day running average. Something to reduce the impact of measurement error when your tool is less accurate than what you're measuring.

Meal times only matter if by not eating much throughout the day it would cause you to binge eat at night. Carbs only matter if you have insulin issues or whatever, protein high diets are not the cure-all for weight problems.

Now whilst I think that the OP has only caught herself on a high day, I thought this blog post is still a bit informative.

http://www.acaloriecounter.com/blog/why-am-i-not-losing-weight/