Help!

So I felt a little nauseous when I went to my dr last so she prescribed me Phenergan 12.5mg every 6 hours. Well my insurance hasn’t kicked in so we had to pay out of pocket for it $35. It hasn’t helped any and I’ve thrown up every meal I’ve eaten in the last 3 days. Even throwing up liquids. I constantly feel nauseous and throw up multiple times a day. I called the dr and let them know and so they prescribed me something else to take alongside with it. I don’t Know what it is but it’s $116 out of pocket. I don’t know what to do as the first one didn’t work and I feel I will be waisting the money so DH said we can’t get it. What should I do? I have an appointment in the morning and I’m going to talk to my dr about it then.