I have a really bad pain in my right breast. Almost like a very sore knot. It feels just like when I had mastitis, but every time I've gotten that within the first 24 hours I had a raging fever and was pretty much non functional. And it was all red on the outside. This time it is just the pain and discomfort without the fever or redness. Any ideas what it is and what I should do for it. I've been nursing on that side a lot- but anything else I can do?