Diclegis for nausea

So I can't deal with this symptoms anymore I called my doctor and prescribed Diclegis for nausea but now my husband scared me he's like that is not a natural medicine god forbid baby gets sick from it. He's like unless u end up wanting to go to the hospital take it. Now I bought it and don't want to take it cuz I'm scared it'll hurt the baby and I still so beyond sick every morning is out of control. I'm so nauseous and tired is taking over my mornings. Help I tried crackers I don't know anymore :(