Try the Haaka hack (YouTube it). I did this and a legit string of mucous stuff came out of my boob and from then on the pain went away and it cleared up. Relatively warm water and magnesium salt in the haaka and on your boob will draw the blockage out
Massage on the direction of your armpit. Feed baby more often from that baby. Just had one too and above helped clear it
Use electric toothbrush on it to break it up xx
I had one, I just kept feeding my son in different positions on the side. I also stood under the shower and massaged it with my knuckles … (it hurt quite a bit not going to lie) it was okay in less than 24 hours 🤞🏻 x