Ay, normal lang yan mama! A lot of my friends didn't go into labor until 39-40 weeks, kaya wag muna mag-alala, basta you and baby are healthy sa checkups mo. Pineapple juice and exercise might help a bit (light walking, pelvic tilts), pero honestly wala silang guaranteed magic, kaya don't stress yourself trying all the tips na yan. Best talaga is to check in with your OB kung may specific concerns ka or if you want to know what signs to watch for sa inyo, they'll guide you better base sa condition mo and baby. Kaya mo yan, mama!