Lump under arm pit

[LilllyLovesLife]

A few days ago I got a fairly large lump under my armpit which kept getting bigger. Until last night when it started to leak Puss. It's a greeny/yellow puss. I haven't been able to get to the GP yet but should I be worried? It's very painful and it leaks puss when touched.

Any ideas? It's pretty gross TBH!

I would guess a boil? That happened to my mother. GP should be able to draw it out (sorry gross). I had something similar which turned out to be a benign cyst that they surgically removed. Worth getting checked out, but I wouldn't worry too much.

Thanks