Lumps in boobs

I know your all going to say get it checked which I already have and it's apparently a cyst. Anyway my boobs are sore and mainly in my right one there's a big lump from what I feel apparently its breast tissue (also got told that at docs appt) but my boobs have got slightly bigger and my right boob is from what it looks like has milk coming out of it not alot just a very little amount. Any advice what this could be?