Terrible head pain!

Hey guys I'm new on this fourm and hopefully you guy can help me out with my situation! Ok so the past 2 times I went to the gym I started to workout and would get a terrible headache and become dizzy and felt like I would faint! The first time I tried to push myself through it and it go so bad I went home and threw up and had the headache for the rest on the night. I drink plenty of water and I recently stopped my pe workout because of this if there is anyone on here with any suggestions please let me no. Thanks

[QUOTE=johnjohn03;1004929633]Hey guys I'm new on this fourm and hopefully you guy can help me out with my situation! Ok so the past 2 times I went to the gym I started to workout and would get a terrible headache and become dizzy and felt like I would faint! The first time I tried to push myself through it and it go so bad I went home and threw up and had the headache for the rest on the night. I drink plenty of water and I recently stopped my pe workout because of this if there is anyone on here with any suggestions please let me no. Thanks[/QUOTE] My guess would be some sort of caffeine problem. A lot of Pre's are loaded with it and when you try to back off them or go cold turkey, you'll get the caffeine withdrawl headaches. Just try drinking a cup of coffee before you head to the gym and see if it helps. I went through something very similar a few months ago......