Be sure to check anything that you take for heartburn, with your doctor. Some of the over-the-counter products are not recommended for pregnant women.
Try also, mint tea -- a friend of mine swears by it and by papaya tablets.
I just bought some medicine so hopefully that will help
I know the feeling, I take tums but they make me feel blah and sick to my stomach. I get it from even drinking water :( joys of pregnancy