Sick, what can I do to relieve it?

I woke up this morning, and felt very nauseous, also having diarrhea. I thought it may be food poisoning from dinner last night since I ate chicken, I'm always paranoid about getting salmonella. BUt I have a sick baby and have to go take him to the doctors and I would really like to not vomit in the truck while I am driving. So far I have only thrown up 3 time in one trip, but I still feel like I need to throw up more. I'm miserable and have 3 kids to take care of. Are there any home remedies I can try or things I can do to help subside my nausea and diarrhea?