Didn't eat five meals, ate, and now I have constant bowel movements, and an upset stomach, HELP!?

So for the last little while, I have been feeling ill ALL the time. Every morning I wake up and don't want breakfast, but I try to eat anyway. I have started eating less a lot, and I am sleep deprived, mostly because I lie awake at night feeling sick. I feel unwell, I get pains where my kidneys should be, my stomach feels upside down, and I feel out of sorts. Just recently, as you read above, I didn't eat (for complicated reasons) for a day and a half. When I finally ate, I was starving. I ate two medium steaks and some dairy, and about 3 hours later, regretted eating. I have not vomited, nor had serious diarrhea, yet just constant nausea and general feeling of being unwell. I couldn't sleep all night. This morning I ate, and got similar symptoms. I have been inactive lately due to sports injuries as well, so that hasn't helped. To make matters worse, I am indeed a slight emetophobic, so this has made my life a little worse. I'm truly sick of feeling sick all the time. Please, I live a normal life, I have friends, and keep up with school well, and am USUALLY very active. I just don't want these recent troubles slowing down my life any further. I do plan on seeing a doctor in due time, however, ANY instant help/tips would be very much appreciated. Hopefully I can get some sort of answers here.