Worst day in weeks

I'm 14+1 today and was hoping my symptoms were going to start getting better, but I don't seem to be that lucky. I'm feeling really dehydrated and dizzy, I've vomited 7 times since I got up 7 hours ago, so about once every hour, and I am dying of thirst. Left a message for my midwife asking about IV fluids but haven't heard back yet. Zofran isn't helping at all. Any other suggestions?