Is this normal to have period and breast are swollen and leaking, I recently had a biopsey on my right breast which came back negative.

As far as I know (and I looked for quite a bit to find an answer) a biopsy is not going to cause lactation.

are you on any medications? I ask because when I was on a medication, one of the side effects specifically was lactation. It was horrible!

also, have you had unprotected sex recently? My grandmother had her period thruout her whole pregnancy, and I have known several women to have a few periods while pregnant before stopping.

and as always, when in doubt, see your doctor. Random lactation is something you want to find out why :)
until you find out, invest in some nursing pads, or do what I did to save money and cut a pantie liner in half and stick it to the inside of your bra.

good luck!