Aww sayang, at 29 weeks ada sakit bawah memang boleh jadi normal sikit, ligaments stretching, baby's weight, tapi since you're pregnant, better safe than sorry, please check with your doctor atau clinic esok , especially to make sure everything's okay with the baby and placenta. Good thing baby still moving okay la, that's a positive sign! A few of my mum friends had similar dull aches but their doctors confirmed semua fine, so don't stress, just get it checked out for peace of mind