Throwing up after exercise?

The same thing happens to me sometimes after I work out. Try not to eat or drink too much right before your workout. Be sure to eat plenty and drink plenty of water before your workout, but give yourself a couple of hours to digest before your workout. I find this really helps for me. Also, with the water, you definently don't want to be dehydrated because you will feel sick, but unless your workout is super-long, don't drink during it, only before it. I'm definently no medical expert, but this is what has worked for me, so it might work for you.