I saw a mom with a thriving 3 month old baby at a community breastfeeding drop-in support session today. In the last month mom has had sharp pain post feed in outer aspect of right breast only. There has been no history of antibiotics, no thrush- baby's mouth is clear, mom not complaining of any burning in nipples/breasts, and nipples are (almost) normal (more in a sec.) Mom did some breast palpation and didn't feel anything- I palpated and thought I could feel maybe an area of slight thickness, but no plugged ducts or lumps. She has had no plugged ducts or mastitis. Baby has been feeding well- no refusal etc. Mom says the sensation is something like her "veins emptying" but it can be very painful and lasts for (I forget exactly) half an hour. She has tried warm compresses and massage and that has only helped slightly. The only thing that feels helpful it to gently move her breast medially. Re her right nipple: She said she sees a yellow or white spot there after feeding- also on the outer side of the nipple. I did see the white spot after feed, but didn't feel any nipple lumps. My impressions were: plugged duct due to skin over duct opening and duct cramping. I've sent her to her physician for thorough assessment of breast, expecially thickened area, and to treat plugged duct by opening it. Could thickened area be a tumor- would it cause such pain? Do any of you have other ideas as to what this could be? What are your suggestions for comfort measures.