Hope,
This is a full blown Nal. over!
My heart goes out to you, for mine made me feel like I need to go to the E.R. It sounds like you are there

. UKBlonde said that she felt like this every time she drank pre-nal...
I would suggest sleep, if you can, and eat something light when you think you are ready. Unfortunately, like with any hangover you just need to suffer through it.
I found saltine crackers, chicken noodle soup, and toast with very light butter helpful; some type of liquid with electrolytes (gatorade or what not) to help your body will help as well.
I hope this passes soon; however, it may take 2 days before you feel like yourself again.
You will most likely not be able to drink for at least 2 days, so when, or if, you do drink please make sure that you take that pill and wait 60-90 minutes and try to set a limit (for it sounds like the nal. is trying to give you one).
I hope this passes soon for you,
Jaba