Acid reflex keeping me up?

Okay so I have acid reflux (GERD) and I take Zantac to help with it. The symptoms of my acid reflex is I have the burning in the throat and bad nausea. Right now I have bad nausea and I can't fall asleep and it's annoying me ); i tried sleeping up Right but it's not working. Please what can I do? I hate having bad nausea