I am 21 years old and I am not sure if I have an eating disorder. I go to different web sites and I seem to have all the symptoms. I am already having certain health problems like slow heart rate, dizzieness, stomach problems, ect.... I take diet pills and just now started using water pills. There is not a minute out of everyday that I dont think about calories and carbs. There are some days that I through up 3 times a day give or take. I looked up bulimia and it seems I have some symptoms, but I dont eat that much. I try to keep my calories under 600 a day. If I feel I go over than most of the time I will make myself through up. I have lost 17 lbs in the last 5 months. I weigh myself all through out the day and I am still at my normal body weight. I'm 5 8" and 137lbs. This has been going on for about 1 year. It just has really got bad the last 4 to 5 months. I am really confused and don't know if it is just all in my head or is there really something wrong with me?