I am getting nervous

Would you consider opening up your diary? Then people can see what you're logging and make specific suggestions.

I think your Net calories are too low per day - unless I'm misunderstanding. I dont think you should go below 1200 net (including exercise calories).

I also wouldnt weigh more than once a week as it can easily differ from day to day depending on what you have eaten, e.g more salt etc.

Not sure if thats any help though.

By the way - what is your current height and weight?

Here's what I noticed in my very quick once over - and I only went back about a week or so. But most days you're over on sodium. That could be part of the problem.

However, you stated you lost the weight by going on a very low calorie diet. I'm not sure what that means in terms of total calories, but my guess your body is adjusting to what you're eating now. It's really tricky to figure out maintenance calories - especially if you're coming off too low of calories. It may take a while for your body to catch up with your new lifestyle.

Are you calculating your calories burned accurately? It's difficult at best to know for certain how many you burn during a workout session, but if you're only using MFP as your calculator you may be over estimating. I've found it's Santa Claus. My HRM is always lower than MFP. The longer I exercise the more it's off.

And as for weighing yourself daily - I see no harm in it. I do it, too. I make a mental note each day, but only record once a week.

As others have mentioned you sodium intake may be high. Also, I too noticed that your evening meal is a considerable % of you calories. As we hear so often, breakfast is the most important meal of the day. I'd switching it up and eating more in the morning and at mid-day and lighten the evening meal. I weigh myself daily too. Like you I was told it would help me identify problems before they become big. I find that if I don't weigh myself everyday, I tend to go off plan. I don't "live by the scale" however I do take note and when I see a multi-day trend like you did, act on it. If none of this and suggestions from others helps and the weight gain continues for no apparent reason, contact your doctor. Something else may be going on that has nothing to do with diet and exercise. You can't be too careful!

Sorry, but I am going to disagree with the sodium theory.

In your case you describe a sudden shift from weight loss to weight gain starting 5 days ago and continuing daily. When I review your diary I can see that your sodium levels actually have been constant for the 2 weeks I reviewed. Therefore I discredit sodium intake as the cause of the changes.

I do observe though that whilst your carbohydrate intake is pretty constant, there has been a bit of a shift upwards and certainly towards higher carbs per meal (balanced by none/reduced carbs between meals).

I believe that this could be the cause, and just like the sodium argument its is increasing the water volume in your body. When you were consuming your carbs in a drawn out manner accross the day you never took on enough to replenish glycogen stores in the muscle cells. Glycogen bind with water (I think at ratio of 1:4) and so when you replenish glycogen stores your will add quite a bit of water weight.

This isn't bad weight, it isn't fat. and I would bet if you depleted your glycogen stores you would see a dramatic drop within 2 days (this is why people starting a diet "lose" 6 pounds in a week).

Just my opinion but I would drop your carbs per meal to 30-40 grams of low GI carbs per meal and add in some fruit between meals. I believe this avoids insulin spikes and keeps us in fat burning mode 24 hours a day at a more constant level than the spike-dip-spike-dip effect you get when eating higher amounts at each meal with long gaps between.

I can understand getting nervous about gaining weight, but my question is, how much more (if any), do you want to lose? You're 5'11 and weigh between 151 and 156. That's a healthy weight range.

Good advice here. Your weight is in the healthy range (lower part of the range). You should be in the management phase.
Meal timing is irrelevant.

Diet looks pretty good in my uneducated opinion although you might want to track sodium.

I weigh daily, and enter the data on a spreadsheet. I then average the last ten days weigh ins, so daily fluctuations are smoothed out.

Probably the best weigh to track whether it is fat or muscle is keeping track of your waistline measurement. If the waist circumference is decreasing, you are losing fat.

i would suggest trying something that worked for me when i was in your shoes..first of all the sodium is too high. you might want to learn to eat with less condiments on your food which is where alot of that sodium seems to be coming from . i use a ton of alternatives like spices,herbs, onion,garlic and red bell pepper .

another suggestion i would make is to scale down the number of calories in your lunch and dinner.. i would suggest eating 5 or 6 times a day with smaller meals . some people may argue with me on that but i lost 80lbs and when i started laying lower on the salt and eating more often during the day i noticed a difference in the numbers on the scale.

aside from that you might have gained some muscle mass and loss some body fat. i went through that last year for like three months . i lost 8 % body fat and not one lb on the scale ..also went down a size in clothing