I was standing in Wal-Mart this morning at the cash register returning an item I had purchased when I started feeling strange. (Yesterday, I woke up with a bad cold, but I don't think it has anything to do with this.) This is what happened: It started with me getting really hot. I started sweating badly. My mouth went dry. And everything gradually but quickly got dark. I could not see anything, but I could hear everyone asking me what was wrong, what could they do and should they call an ambulance. I also felt kind of dizzy and light-headed. I didn't move because I knew if I did I would just fall out. So I just stood still fighting it with all I had. Someone helped me over to a chair and after about 10 minutes, I started feeling better. (I was impressed that everyone was being so nice and trying so hard to help me). I have been nauseated ever since. I did not eat anything this morning before that happened. I'm not sure what I should get checked for. I don't have the money to spend on lots of tests (and no insurance). Has anything like this happened to anyone else?