Hay, at 32 weeks that tummy ache could be normal, ligament stretching, the baby's position, or even gas talaga, pero since hindi mo na-experience sa first two pregnancies, better to check with your OB just to be safe, ha? Every pregnancy is different kaya wag mag-alala, pero para sa peace of mind mo talaga dapat i-mention mo sa doctor sa next visit, or if it gets worse or may other symptoms, go na kaagad. Wishing you an easy third trimester, mama!