thanks for the reply. i saw the doctor and it is mastitis
luckily it looks like we caught it early enough and she gave me anti-biotics to help get rid of it.
i feel absolutely exhausted today but luckily my breast isn't too sore to nurse my dd (i put a hot wet compress on it before her feed). i have just stuck with the 3.5 hour schedule today, as the doctor said i don't really need to nurse more often. if my breast doesn't seem to be improving i will ofcourse review sticking to the schedule.
i stupidly forgot to ask her if the antibiotics will help get rid of the milk blister. if this doesn't heal surely the problem may recurr