Blister on nipple from pumping!!

Is your flange size correct? Have you tried nipple balm x

I would suggest checking your flange size and pumping at a lower suction. I've found using a saline nipple spray helps relieve pain. Apply a warm compress and use nipple creams if you aren't already. You could also use your own breastmilk too to heal it. Air drying might help with irritation too! I hope this helps!! Xx

Ouch!!!!

I've had that happen before and it was due to having the wrong flange size. you can ask a lactation consultant to measure your nipples for your size. also try to use the lowest suction possible and rub some breastmilk on it and let it air out for a little bit while it heals. you can also use nipple cream.