Congrats!! What a great milestone!
Regarding the crushing nausea...ugh...I'm sorry. I can definitely relate as to how terrible that can be. My dr didn't prescribe me zofran, but told me take B6 and Unisom combo. For me, I could only take the unisom at night because it made me really sleepy and that was only on a 1/2 of a pill. While it didn't help me all that much, a lot of women swear by that combo. I continued on it anyways for fear of what it would have been like had I not been taking it. Good luck!