Morning Sickness phobia and zofran...?

I foung out I was pregnant on Halloween, and miscarried on Thanksgiving. I had morning sickness so bad while I was pregnant, that I had to get IV fluids at the hospital. I was precsribed phenagran, but it didnt help a bit. I am scared to get pregnant again for fear of being this sick again.Have u taken zofran? I know its expensive, but i would pay anything to get relief. We really want another baby, but my fear of morning (24 hour)sickness is overwhelming, and making me reconsider conceiving again =(