I do have breast lump, i m going to have breast biopsy this may 5

it is benign, non cancerous
First, my younger daughter was 5 days old, breastfed, I noticed there and saw Dr immediately he thought it is milk plugged as magnitis (spell?)i was given antibiotic (for nothing

) now my daughter is 15 mo there is still have lump, Dr thought is A lactating adenoma, Dunno.
I have seen other Dr same doesnt know cuz lump is in chest upper breast mostly not alike milk plugged and neither hurt nor red nor hard I am still worrying about cancer, I read after biopsy can get cancer

BTW, I am 27 now first baby I was 22 with older daughter, both were breastfeeding over 1 y.o.