Too many calories!

what are your fitness settings at? sedentary, active? to maintain or lose?

My fitness level is active, I believe (I work out a few days a week, walk an average of 30 minutes at a fast pace to class every day and am I server at a restaurant. I don't know how much I want to weigh, if it were up to me I would maintain but I'm not sure.

Well what about the days you aren't working and not at class. Obviously you won't have the normal burn on a day off.

Instead of setting your fitness level to active, set it to lightly active. Then just log the exercise and 30 minutes of walking to your workout journal. That way you can compensate for the days you are burning more calories.

I can't tell anything about your goals or your stats, so that's hard to assess. I can't see your diary, so I can't comment on what you are eating to reach your goals.

Here is what I can tell you. There are plenty of females here on MFP socking away 2000+ calories a day who are hard and lean. They have great fitness regimens and look very fit.

2000 calories is not necessarily a big number. Most hitting that are doing so eating plenty of quality protein (well over 100g a day) and a decent amount of healthy fats (50g or more a day).

If you eat nothing but kale, squash, and spinach with trace amounts of tuna then it will be a struggle. Throw in nuts, chicken, eggs, beef, fish, avocado, sweet potatoes, legumes, olive oil, coconut oil and so on, and it gets a lot easier.

if it were up to me I would maintain

Why isn't it up to you??

I'm actually not here to lose weight, I'm here to monitor my nutrients and gain weight in the form of muscle. I've struggled with eating disorders in the past and am trying to keep myself from slipping back into it by controlling my food in a healthier way than I used to. I used to be a little overweight but after that happened I'm not. Food makes me really anxious (I'm unbelievably controlling) and this site helped me more than anything in the world to face my issues in a healthier way. I'm 5'9, 110 pounds. I think if you add me you can see my food diary.

5'9 and 110 sounds extremely thin to me... that's even lower than I should be at 5'4"

In any case, if you change your diary settings and put yourself as sedentary -- THEN track your exerise, your daily would be 1,660 plus your exercise calories to maintain your weight.

If you set yourself as lightly active and still track your exercise it would be 1790 plus your exercise calories.

If you sent youreslf and lightly active and to GAIN 1/2lb a week -- then you get 2,040 calories

Maybe that's how you got the 2000 or maybe you just have the settings a little off.

Also, if you're feeling sick after eating so much -- it might be more from what you're eating.
I feel that way after I eat too many carbs in one sitting... bloated, full and just want to nap.

A couple ideas: When you make your eggs, do 1 whole egg + 3 egg whites; try adding nuts to your diet: an ounce of almonds a few times a day, sprinkle some pecans or walnuts in your oatmeal, etc; Lima beans with a little butter and parmesan cheese are a good, higher calorie veggie; tuna salad with full fat mayo in it; Nutella on toast; apples & peanut butter...
also, try making a smoothie with yogurt, fruit and some whey protein powder...that will add some good calories

That sounds fairly doable. I just need to work out because if I start to gain weight I want it to be from muscle, not fat. That's my biggest worry at the moment.

Then you should up your protein.... protein shakes, quinoa, nuts, greek yogurt (the kind with more protein than sugar - like fage 0%), string cheese, lean meats... you are not trying to lose, you could even do the higher cal protein shakes/meal replacements.