I've been bf'ing for 11 months now, and have had clogged ducts before, so when I felt what seemed like a small lump, I was not concerned. I took a hot bath, massaged, and pumped. But today, I felt my breast, and I have a GIANT lump - it is at least 2 inches long. I don't have a fever yet, but it is huge and painful. Does this sound like the beginning of mastitis?