Hey i am looking for to ask u i found a lup that seams like a big boil under left brest sorry typo above lump it is very painful what should?

Exam: this is highly suggestive of an abscess. See your physician ASAP- this may have to be surgically drained. Do not ignore.

Cyst vs mass: If you have painful lump under your breast it could be a cyst or an abscess. If you have no family hx of breast cancer then I would wait and see if the pain goes away after your periods are over. If the painful lump is still there then go to your Pmd or gyn and have it examined. They may want further testing such as mammogram or an us to rule out other causes

See your: doctor. This may be an abscess that requires prompt treatment.