This is my first post. I would like to introduce myself. You can call me H. I am a 45 year old female and have been suffering with what I thought was a stomach bug for 4 weeks now. I started out with diarrhea for 2 days, then that eased up a bit and by the weekend the diarrhea continued and I was overwhelmed by severe nausea. This has continued. I went to my pc doc who did blood work and stool sample testing. Everything came back within normal range or negative for bacteria or parasites. Was sent to gastro doc and had an ultrasound, which was normal and an endoscopy. I only got half the results on that test as I had this done only a few days ago. And those results were also negative. I have lost 15 pounds and I am a thin person to begin with. I am so worried this is something serious, but they just can't find anything. I haven't been able to work, this will be my second week. I have a very active lifestyle and this is debilitating. Any thoughts out there would be appreciated.