Sayang, tu memang common during pregnancy, hormones and milk ducts start developing, jadi rasa sakit or sensitivity tu normal, tapi kalau the pain is really intense or you notice any lumps, redness, or discharge, better check with your doctor or midwife, okay? A few of my mum friends had the same thing and it settled down after a few weeks, but setiap orang lain-lain so best to get it checked just in case!