My left breast has been tender and quite sore and also enlarged about another 1/2 size for the last 2 months with no relief. And recently I have noticed a clear slightly oily discharge leaking but I cannot find out where it is coming from. I came home from taking the kids to the movies this afternoon to a shirt with a greasy stain on the left side and its in my bra as well. ????? Never had this happen before.