Major acid reflux 35 weeks

I had really bad reflux my whole pregnancy but when I hit about 30 weeks it gotten so much worse that I get super nauseous my throat burns and it makes me gag and want to throw up. I’ve been living off of tums and practically eat them like candy (I don’t go over 6 in a day) but it’s crazy and I need to know anything else I could take to try and help it!