Advice? Please I need help!?

I have been having stomach issues. I saw a doctor they did a endoscopy and found nothing but fatty on my liver. I was taking medicine for my stomach and then I was feeling better. That was a couple of months ago and now this past week I have been feeling extremely sick. I am feeling nauseous, tired, no appetite, cold at times but sweaty, chills. I have been probably only eating 500 calories a day if that. When I eat it makes me feel more sick to my stomach, even the smell of food makes me feel more sick. I believe I lost approximately 10lbs in a week probably more. I went to the doctor they did blood work and a urine sample. Found out that my liver levels or something were off which I had this problem in the past they did nothing about that. But I also have a urinary tract infection and I am on antibiotics for 7 days twice a day for that. Sorry if I am sounding like a hypochondriac but I am rather worried because I am feeling more sick as time goes on. Last night I was crying because I felt so sick and I was in the car and felt really car sick and I couldn't even text. Usually I am perfectly fine in the car and never get car sick. Any suggestions? I would really appreciate your input! Thank You.