Aww sayang, yang ni memang common masa postpartum, a few of my mum friends kena jugak especially kalau delivery was tough! Kena make sure area tu clean and dry, then maybe try wearing loose pants or shorts je untuk kurangi friction, and sit with a cushion kalau boleh. Kalau sakit tak hilang atau nampak macam infected (merah, bengkak, atau ada discharge), definitely see your doctor ya sebab kena tahu apa exactly yang causing it, could be torn skin, thrush, or other things yang perlu proper treatment.