I've Had This Noticeable Spherical, Very Squishy, Lump On A

I've had this noticeable spherical, very squishy, lump on a the inner buttcheck, not close enough to be a hemorrhoid, although I already have those and definitely think this isn't one from past experience. One spot of skin was significantly thinner and was normally blue, so I rightfully assumed it was a blood bubble. Tonight it was purple and the blood seemed closer to the surface. So I used a clean needle and poked it. A LOT of blood came out, but most of it seemed clotted, very jelly like. It has never hurt, didn't hurt poking and draining it, and still doesn't hurt now. Is it still something I should be concerned about? Thank you!