My problem started in early August 2011. I started out with severe diarrhea which is not normal for me because I am on meds that cause severe constipation where I won't go for 7-10 days. I had the diarrhea for about 1 1/2 months. At the same time the diarrhea started, I started to lose my appetite and food would make me feel full and bloated. Since August I have lost 48 pounds. I am 5'8 1/2" and I weighed 178 pounds which is heavy for me but a medication I was on caused the weight gain. I have since taken myself off of the medication. I am normally around 145 which is suppose to be my ideal weight. Anyway, along with the bloating and full feeling I started getting to where I would forget to eat or drink all day long. I could go to the next day and not remember if I ate the day before. Food doesn't taste the same nor do liquids. I am dehydrated, weak and tired. I finally was encouraged by a friend who is a nurse to go see a Gastroentologist. He ordered labs on me both blood and stool. He wanted to rule out Giardia, which he seemed certain that is what it was. He also schedule a colonoscopy and endoscopy. The blood and stool test came back normal so we went on with the scopes. They came back normal. Al he saw was inflammation in my stomach lining. But he felt is was not significant. The biopsies also came back normal. He basically has released me saying the test show no problem. I don't know where else to go from here. How does someone lose that much weight, that fast without trying, why is my stomach so bloated and hurt so bad, why can't I eat but maybe two bites and I am done. It just doesn't make sense? Wouldn't a doctor wonder what could be causing these symptoms. It is evident that I have lost the weight and my friends see that I am not eating. I am turning into a non-sociable person because going to lunch or dinner with my friends makes them uncomfortable because I don't eat. I get severe migraines, which I have been fighting for years, but I am getting them more frequently. I was wondering if I could have IBS or spastic colon but I talked to the doctor's nurse and she said the test would have shown that. Since IBS is only a sign of something else wrong, I just want to know what that something else is? Anybody that understands this, please help. Any advice or suggestions would be great.