Throwing up with contractions!

I'm 38 weeks and a day pregnant. This morning went to the hospital around 2:30ish after throwing up with each contraction since 11:00pm. They were 10 mins apart and I was throwing up, peeing myself and having diarrhea. TMI but it's true. They gave me an IV and zofran and around  3:00 am contractions and throwing up stopped. I was extremely dehydrated and they said that is what was cause my contractions. Iam now 2cm and -3 station. Now at 7:30 am I just got sick again !!! What should I do. 😰 I'd rather wait to have this baby than to keep getting sick!