anyone else having severe heartburn ?

I swear I wake up to potty every 2 hours and when I do,i have to drink water before going back to bed bc it's so bad. for the past couple of nights, I've been getting up around 5 and going to the sofa to sit up And sleep bc it's so bad. and I threw up two days ago bc of the heartburn pushing up my throat. I'm on two pills a day For it and they aren't helping at all. I'm 38 weeks. any suggestions ??