Zofran stopped working???

Hi im 10 weeks and i started zofran at about 8 weeks . When I first got it over a few days it was magical. Some days if I forget to take one as scheduled i would get sick like once . But now here I am on my refill and I’ve been throwing up all morning like crazy. I ate a fruit cup this morning. Then took my pill. I threw it up all up. Ate two french toast stick with a little milk . Threw it up and now I’ve thrown up yellow bile 3 times . Husband is currently getting me chicken noodle soup and jello but I’m scared it wont stay . Please help what should i do?