Heartburn at 38 weeks

Ok so ive been getting heartburns since almost my whole pregnancy. I though that with the baby dropping will disappeared but it just made it worse than ever some night the acid reflex is so bad that a throw up everything i ate that day. Or just doesnt let me sleep doe to the heartburn. Im taking tums and sometimes even 3 but sometimes doesnt work, and drinking milk and doesnt help me anymore. Is it normal the heartburns now at the end? Im so tired of this.