heartburn

I don't know what else to do. Last night I was waking up every hour with severe heartburn, I'd have to take a sip of ice water or I felt like I'd throw up. Made it through the night, had some toast for breakfast and then ended up throwing it up. I'd rather not take tums because I read it basically makes it so you have to keep taking them. Anybody find certain foods or drinks or natural remedies that helps? I'm 35 weeks by the way