Aw, normal lang yan sis! Around 29 weeks, ang tyan mo ay tumitigas dahil sa Braxton-Hicks contractions, yung practice contractions ng katawan mo bago ang actual labor, kaya don't worry. The upper belly pain could be from stretching, pressure, or sometimes kahit sagwa lang ng position, pero since first time mom ka, definitely best to mention it sa OB mo sa next checkup para peace of mind, lalo na kung medyo malakas or frequent na siya, para sure lang na everything's okay with you and baby.