Ahhh, at 29 weeks yang mengeras tu kemungkinan Braxton Hicks contractions lah, your uterus practice contracting, very normal! A few of my mum friends cerita the same thing dekat stage ni, especially kalau dah active atau tired. But sebab ni pregnancy thing yang kena monitor, better check with your doctor just to make sure everything okay, terutama if it's painful or ada spotting.