If you can, choke down some Gatorade at some point too. Even a few sips is good as electrolytes, etc. Also, seriously, SERIOUSLY up your fluid intake. I think the whole dehydration during food poisoning thing was the most MISERABLE I'd ever been in my entire life. And that includes the three times I've had the stomach flu. And been attacked by hornets.

Definitely take care of yourself and if you think you need to go to the doctor GO. Do not put it off, do not waffle, just get your ass in the car and go.