Sabar je mama, normal pon if 39 weeks pun belum ada tanda, some babies just like to take their time! A few of my mum friends were in that boat jugak, sikit-sikit sakit je tapi nothing happens until suddenly labour starts in earnest. Since you're so close to 40 weeks, best to check in with your doctor or midwife at your next appointment to make sure everything's progressing okay and baby's doing well, especially since you're a first-time mum dan ada banyak unknowns. In the meantime jangan stress, the sakit sikit tu bisa jadi Braxton Hicks preparing your body, and baby will come when ready, though if suddenly tiba-tiba contractions become regular and painful or anything else concerns you, jangan hesitate to call the hospital.