Uy, heartburn is the worst talaga, especially during pregnancy! A few of us moms swear by drinking lots of water throughout the day and eating smaller, frequent meals instead of big ones, helps na rin na hindi ka mainit ang tiyan. Ginger tea or chamomile before bed helps some, pero honestly if it's really bothering you, check with your OB na para sure it's not something that needs proper treatment kasi GERD can be tricky sometimes.