Hello. I have been very ill for a couple of weeks now. It started on the 7th. I went to work and after being there a couple of hours I got very sick. I came home from work and spend the rest of the day and the next feeling nauseated with a headache and vomiting. Over the next two weeks the symptoms persisted. I don't vomit everyday but I do experience a lot of "dry heaving". Other days I will go a full day feeling fine, then I will come home and throw up my entire dinner, have headaches, and all just feel run down and crappy. This past Saturday was the worst, I attended a local walk for autism. When I woke up I didn't eat anything because I had a stomach ache so I drank a bottle of water, attended the walk, and before I was about to leave threw up my entire dinner from the night before. I made it home, threw up more, couldn't keep anything down even liquids, had a terrible headache, and when I stopped vomiting I had diarrhea. I thought maybe I was pregnant but the test I took was negative. I don't always have regular periods because I have PCOS but I have had two in a row about three weeks apart and started getting sick two days after the last one. Any thoughts?