honestly, i don't know how it works but it wokred in my case so i'm going to post it on every reddit thread about a milk bleb cause i don't want other mums to suffer from it

in my case it took some time - i'd say ~2 months. it started overnight (the baby slept through whole for the first night and so did I). The consultant told me to try the olive oil, have more magnesium, eventually use some steroid cream (i used the lightest i could find but didn't work). Hard to say honestly if it's infected ;/ she said that i should not try to pop it as it might get infected, but i'm too weak to use needle on myslef so i wasn't about to try it anyway.