Hey, I am 6 weeks pregnant with my first child. I caught a stomach bug, and have been vomitting with diarrhea for 15 hours now. The vomitting has subsided slighty since there is nothing left to come up, but the nausea is relentless. Is it safe to take the generic Zofran (ondanestron) to help alleviate the nausea so I can get some fluids down?