Ask your Dr., but mine just ok'd Zantac, the Tums just weren't cutting it anymore. The 75mg seems to be working well enough for me. I didn't take it this afternoon because I hate taking something every day, but I just took one because I'm miserable.
Tums are great. Also my Dr put me on Zantac. 150 mg once a day. It works wonders!
Tums work!! Regular strength or extra strength...the off brand works as well. I've had heartburn throughout my pregnancy, I'm 34 weeks. Someone also just recently told me that if u take a sip of milk it'll help 2.
you can also avoid drinking liquids with your meal. drink your beverage after you eat or before you eat. i did that for gestational diabetes and i never had heart burn. you could also consider not eating the oatmeal if its causing you to have heart burn.
hope you have a great delivery!