well today i had one for the first time. Im on the swim team and the first practice starts in a week so i went to the pool for the first time in about a year. Blood came out of my nose when i blew it, so thats always great . Then after a total of 6 laps or more and pushing myself i got one.

Ive never had one so i didnt know what it was but i just couldnt catch my breathe and kept trying to breathe for more air, my muscles kept shaking like i was still excersizing, and dizziness ensued. this went on for about a half hour.

yea so...is this a bad sign guys? Im not sure at all what caused this and well...i just dont want to have another one when i go to practice(which will be more intense)

advice..comments?