Ah sayang, lecet bawah payudara during pregnancy mmg common, especially bila payudara membesar! I had the same issue, a few of us mummies experienced this in trimester 2. Try to keep the area dry, wear soft cotton bras (yang breathable), and definitely get yourself Mama's Choice Nipple Cream , it's pregnancy-safe and breastfeeding-safe, really helps with any skin irritation around that area. Honestly jangan malu to mention to your doc at the next checkup je, simple thing but they can advise better, tak perlu special appointment pun.