you could have a plugged milk duct from stopping nursing. Those are the key signs of that which or will (can) eventually lead to mastitis. If your breasts are very engorged then you should relieve some of the pressure the milk is putting is on them. You should never stop nursing cold turkey unless your child was already down to nursing just once or twice daily. You need to check for these additional symptoms of mastitis. Red, streaky, tender area anywhere on one or even both of your breasts, achiness all over, low grade temp. Even if you don't have the temp. (some don't run a temp) If you have those symptoms you will need to drain the breast or breasts that is hot, swollen and red and streaky. you can use a pump. Also use very warm compresses on the affected breast that will help open up the ducts and draw the plugged up duct toward the nipple. You will need to do this for at least 24 hours. Drain the breast and compresses and ibuprofen, and repeat the cycle. If you don't feel any relief after 24 hours or so, then you will probably need antibiotics from your PCP or OBGYN. I hope this helps!!