Hi. I'm new here. I live in phoenix az, i'm 23 years old, and this last weekend I fainted for the second time in my life.

The first time had been about a year ago. I have been at a restaurant sitting down when suddenly I got a cramp on one leg...Then the other leg. I tried getting up and this made the cramping go away, but then everything went white and next thing I knew I was in the floor and my ears were ringing the way old modems sounded when they connecting.

Anyway, this last sunday I had been at the autocross for about 8 hours and even though there was shade where I was sitting, I think the 100 degree temperature dehydrated me a little. I went to pick up a friend at the airport and to hang out with him afterwards and I felt normal...Maybe a bit tired. Driving home that night my right leg, which is the gas pedal leg, started to ache a little. I thought it was normal since I had drive like 100 miles of stop and go that day. When I got home I layed down on the floor and stayed there till morning when I crawled into bed. Later on, I was awaked by a leg cramp, and I got up to see if it would get better and it did. My girlfriend came into the room and I walked a little towards her. Everything started going white and I even said "i'm passing out" before I fell down hitting my back on a chair and almost hitting my head on a speaker.

Well, i'm just wondering if anyone knows what this might be related with. The only other physical problem that I have is that if I have a lot of sugar I get migraines, but I don't know if that would be related to this. Is this something that I should go see a doctor about?