Oh ouch You are really having a rough time of it I think you are wonderful for hanging in there.

How long does it take from when you notice the sore spot through to the fever/chills?

Sore spots are generally blocked ducts. Sometimes feeding in different positions can help drain the blockage, before it turns into mastitis. Massage in the shower can help. Massage while feeding can also help. Just rub it gently from the outside down towards the nipple.

Do you think DD is fully draining each breast when she feeds? ETA: not fully draining as in not a single drop of milk left, but draining so that you don't still feel full and uncomfortable, do you get what I mean?