nausea after 15 weeks

Cheye
Okay so my doctor had me on Diclegis and another anti nausea pill from about 8 weeks to 12 weeks. The nausea obviously stopped and was a lot easier to deal with while being medicated, but slowly ever since the prescriptions have run out the nausea has started coming back. Now it's back full force and I'm over 15 weeks and I can't sleep without throwing up as soon as I wake up pretty violently. I don't think the doctor wants me to keep taking them for some reason and I'm wondering if there's anything else I can do because I'm pretty miserable again? I've tried snacking before bed to absorb some of the acid but it doesn't seem to work and I've tried small meals through the day and that hasn't worked either. 😭 help meeee