Ay oo, heartburn talaga yan sa third trimester, nangyari din sa akin around 31 weeks kasi lumalaki ang baby at nagsisikip lahat, plus hormones ang gumagawa ng acid reflux! Pero kung sobrang intense or may ibang symptoms, better check with your OB lang to be sure, hindi ka mag-iisa sa worry na yan, a few of us mums talked about it din and same experience, it passed after delivery naman. Try eating smaller meals, avoid spicy or oily foods, at tulog with head elevated, nakatulong sa amin!