Dude. Call an ambulance. Fuck the insurance or the Premiums. You need to go to the doctor and get checked. I know about Food Poisoning. I was diagnosed with food poisoning back in 2008 from eating bad meat from Del Taco. I was throwing up and had the most severe diarrhea. I went to the hospital after it felt like my insides were being stabbed by a razor blade. Eventually I went to the toilet and a whole pound of blood just came gushing out. Because of that I now have severe IBS symptoms and Small Instestinal Bacterial Overgrowth (SIBO) that my doctors and I are still trying to cure. Thanks, Del Taco! 

In other words, go to the hospital, and call an ambulance or a Taxi if you need a ride. Or call a friend or family member, if you have any. But yeah. You need to go. The hospital won't bill you for going to the ER and have to, by law, see you, regardless of your income. You'll probably get a bill after the fact, because America. (Vote Bernie Sanders if you want free Healthcare). But, for now, go to the docs. Food poisoning ruined my f***ing life. Don't let it ruin yours. Even if you are concerned, go! Doctors will take care of you. Mostly...

Good luck. Keep us updated.