You need to get yourself some gaviscon, and make an apt with your doc, he may be able to give you something else. I am just on gaviscon at the mo though. It is safe to have in pregnancy.
Peppermint and lemon oil on the chest and neck
For me fun helped me a lot. After I eat I chew gum and that helped me. I used to get heartburn even just drinking water!
Tsp of mustard. Sip of pickle juice. Zantac. Good luck. Mine has gotten so bad that nothing hardly helps. I have to take Zantac and zofran (which is for nausea) before bed. If I don't do that and sleep with my head elevated i wake up at least twice to go throw up from the burn of acid reflux. 28w today and been having heartburn every day going on two months now.
I put mustard on a piece of bread and it helps me! I also got a thing of tic tacs to carry around with me that help too