36 weeks night vomiting

Every night without fail I wake up with massive chest pains and throw up mouthfuls of acid. I have severe acid reflux and had it before pregnancy. But the chest pains and throwing up has me in tears every night. Anyone's else this bad and have something to at least help? I don't even know how food is causing it, I'm eating bland food at 5pm for dinner and it's happening at 3am. I don't get it???