I had relief from pumping or nursing and massaging the area at the same time (hard to position, but use pillows or even your husband if you can tolerate it). Depending on the size of the area, even putting one finger, firmly on the area and then kind of kneading it around helped. You can start outward and then work your way towards the nipple (like a self breast exam). And I'm not surprised that your nipple doesn't hurt, mine never did even when I had mastitis.
And take some tylenol, that will at least help a tad with the discomfort and is safe while nursing. Drink LOTS of water just to stay hydrated. If those don't work, I'd call the doc first thing to see about mastitis. It comes on VERY quickly, is horribly painful, gives you fever and chills and will continue to come back too if it isn't completely gone after antibiotics. And you should keep nursing regularly even if it hurts because that is one of the best things for mastitis.
Hang in there! I know it is very hard with a newborn, and doubly hard when you're not feeling great.
KW