Oo, karamihan ng preggy moms experience heartburn kahit buwan pa lang ng pregnancy, so totally normal yan! Mine started around 12-13 weeks pa lang, and it was honestly annoying lalo na pagkain ng spicy or greasy food, kaya nag-adjust lang ako ng diet at mas konti na ang kain pero frequent lang throughout the day. At 15 weeks, it's very possible na mag-start pa or mag-worsen pa siya as your pregnancy progresses kaya wag ka mag-alala, pero if it's really uncomfortable or affecting your sleep, better mag-check ka ng OB mo para sa safe remedies na okay lang for pregnancy.