YES, YES and YES!
I did the SAME THING...skipped breakfast and lunch ALL the time. I would have a fairly large dinner, sometimes giving me about 1000 calories at best, but for the most part, I cannot imagine that I hit 800-900 some days because I eat a lot of the same dinners now.
You are KILLING your metabolism. I am proof that a metabolism can bounce back after doing this for years. I also have hypothyroidism, which makes the metabolism even more sluggish (and killed my appetite even more).
I got my meds in order, began FORCING myself to eat breakfast and lunch and a snack before dinner, started exercising and I have lost close to 10 lbs since May 25th. I do count calories. I think I started out having to count to make sure I was getting enough. I zig-zag mine and so I have 3 low days (1200), 2 medium days (1500) and 2 high days (1800).
Like yesterday was a high day and I ate:
Breakfast:
2 cups coffee w/ 2tsp. sugar and 1/4 cup whole milk
Whole wheat bagel with 2tbsp ff strawberry cream cheese
Lunch: (Probably should've had this for breakfast but I was in the mood, lol)
2 slices whole wheat toast
1 whole egg w/3 egg whites
1 slice turkey bacon
1 sf tuxedo dark/milk chocolate sf jello pudding
Sweet Tea
Snack:
1 apple
2 cups skim milk with tsp ovaltine
Dinner:
4 oz. lean ground beef
1/2 cup of spaghetti sauce
4 oz. whole wheat spaghetti noodles
1 slice of whole wheat bread toasted with garlic butter
Sweet Tea
Dessert:
Little Debbie 100 calorie cake
I STILL came just a little under 1800
And I LOST close to a half a pound when I weighed this morning.
More than likely when you begin feeding yourself, your metabolism will raise to a point where you can begin some type of exercise (considering you have no other health problems). Your body just wants to sit there and do nothing at this point because that is all you are feeding it to do.
So my advice to you is eat