uncontrollable vomiting after meals

For the last year Ive been eating about a meal a day. I have had a self image problem for a while. Ive admitted to my eating disorder, but I have never once forced my food to come out. But the story goes on, and I realized I was getting sick about 5 weeks ago, I started vomiting after eating uncontrollably. I started vomiting every other day after a meal. Now for the last 3 weeks, after every meal I have (3 times a day), I immediatley vomit right after I eat (15-45mins after). I have never vomited prior to the last 5 weeks when it all started. It seemed unusual that it all started all of a sudden. My doctor says Im not use to having food in my stomach, but for the last 4 weeks Ive been eating 3 times a day and I really want to get healthy again. i done gastroscopy test] but nothing help.I just had dinner with a few friends, and while eating my dinner at the restaurant, the food came up uncontrollably. Ive taken gravol to stop the vomiting but it wont help. When I got home, I drank a full glass of water, and 5 minutes later I vomitted out the water and my dinner in the span of 30 mins (vomiting 7 times). I dont know what to do anymore, my throat is killing me and my doctor told me to wait and do a mouth enema (my appointment is 20 days from now). Have you guys ever heard of controllable vomiting after you eat????? I dont know what to do, I cant wait another 20 days of uncontrollable vomiting until they can find and do some testing on my stomach!!! Someone please help!!!!!!!! I also have a SOUR feeling in my stomach all the time.