I ve been very tired for many weeks now. I have been experiencing a lot of sleeping lately way more than normal. Most recently I ve been off of work for three days because of fatigue, and having feeling light headed. To the point I don t feel safe driving. I experienced this about a year ago but it was preceded by intestinal pain then followed by vomiting. After vomiting I passed out, not sure how long. I woke up and found that I was lying in a puddle of my own urine. I then saw my doctor, after this previous experience, and my neck arteries and my heart were ultra sound tested and found OK. he also tested my stool and that checked out OK. I have a physical scheduled for 08/20/15 with the same doctor, do you have any recommendations on what I should ask my doctor relative to tests or anything else?