I had this, turns out it was just a cyst from pregnancy changing my body ect ect but I got it checked out immediately, within 2 weeks I had an ultrasound on it and it was basically gone by then. X
I had this at first when my milk came in , after massaging it with a few pumping sessions it went .mention to midwife if concerned x
It may be a blocked duct, go in the shower or use a warm flannel and massage it out while you express. If you had your boy Tuesday it’ll likely be that your milk is coming in. If it doesn’t go then I would speak to your midwife and the GP x
I would check with your midwife, also it could be glands that contain milk around that area. Definitely get it checked! X
Defo get it checked out, you can’t be too safe but it’s most likely due to breastfeeding related changes x