I am a 5'10 118 lbs 18 year old woman. I have had constant nausea for 4 months now, but not once has it made me vomit. I just feel nauseous all day and every day, and nothing makes it go away. Sometimes anti-nausea medication and ginger tablets will temporarily relieve my symptoms, but nothing really works for a llong time. I have been to every type of doctor I can think of, I've gottten blood tests that all came up negative for anything that could be causing such chronic and severe nausea, I went off of both medications I was taking (Lexapro and Lamictal) because that was a long term side-effect of both and it hasn't gotten any better. I can't eat, and I've lost 19 pounds in the past 4 months. My psychiatrist prescribed me promethlazine and scopoloine, and my regular doctor gave me odansedrone (zofran) but none of them have worked. I have tried being vegetarian, I have tried a paleolithic diet, I tried being vegan, and I've tried a regular diet but nothing helps there either. I started going to therapy because I thought it may be a mental issue and that doesn't help either. I am sexually active but have no STDs and am not pregnant. I'm getting to the point where I can't physically function anymore- at the beginning of this 4 month period I weighed 137 lbs and now I'm down to 118 because I can't eat, there are bags under my eyes because I can barely sleep sometimes, and every single doctor I go to is perplexed and it seems like it will never end, which is taking a huge mental toll on me as well. Please, someone help me or give me advice on what I should do or tell me where I should go. Thank you.