Zantac and Pepcid are a step up from Tums, and quite possibly would relieve your heartburn. Ginger tea is good, but sometimes will have the opposite affect. Elevating your bed, do not eat at least 3 hours before lying down, taking an extra calcium pill daily, avoid citrus/acidic foods, Manuka honey, apple cider vinegar, those are all helpful in diminishing heartburn.
I feel your pain. I had horrendous heartburn during the last three months of my pregnancy. I lived off of antacids, as well as Zantac. I tried all of the remedies, etc. Good luck hun! Hopefully you will find relief soon. As far as the old wives tale about heartburn and a baby having a head full of hair- it is true. My son was born with tons of hair-go figure.