My doctor gave me dangerous medicine while pregnant..

I went to the hospital for dehydration at 12 weeks pregnant and my doctor prescribed me zofran. I have horrible nausea so I’ve been taking it basically everyday (which she said was fine). I had my regular checkup with my OBGYN and I mentioned it to him and he was shocked that the doctor gave that to me without telling me the risks. I’m really upset because if she would have told me the health risks to my baby I would have never taken it (especially on a daily basis). I took it for about 2-3 weeks almost daily. Now I’m worried and angry with the doctor for not telling me.