I have been worried today, because what I thought was a full milk duct is not going away even when my breast are empty. It is a large lump near my arm pit on the right side and there is not one on the other side. I typically feed more on the left during the night and pump the right in the morning. This is why I thought it was the full duct, but the past two days I noticed that it is still there after feeding all day. I am hoping that it is bf related and not a lump. Obviously, I am going to have it checked out, but does anyone else have this?