I'm going to cry

Goodbye zofran...My OB refuses to prescribe zofran for me even though I took it all pregnancy with my son and my son is completely fine and healthy. I have two RXs at Walgreens which are off brand but reglan and promethazine... I'm trying the unisom/b6 combo but this time in the morning and thus far it seems to be working. I'm just frustrated cause zofran has worked wonderfully for me and I don't even take the full dosage. Just 2mg and that's it. I'm so frustrated...so beyond frustrated. This is gonna be a long long pregnancy and I'm only 12 weeks and 4 days