anyone have any sugestions on how to get ride of really bad heart burn i feel like im going to vomit but i never do and its so painfull please help me

im due 02/16/16 and this is my first but iv been in the hostpital 2 times with faulse labor and now i cant hardly lay down with out having bad heart burn what can i do to make the heart burn go away im barley getting any sleep iv already tried tums and mustard but neither of them work for me any advise