HELP please!

I'm scared i'm on the verge of mastitis. I've had a full sore boob since yesterday morning. Max slept through, but the night before that, he didn't, so maybe my bb's overproduced! Anyhoo, now my R boob is in megga pain and has hard lump in it. I've been massaging, in hot showers, putting heat pack on, to no avail. Still feeding through it, but I wince everytime he latches on. My nipple is pretty sore too.....I haven't started feeling feverish or anything though. How long can it take for a duct to unblock? How long should I leave it if it doesn't.....don't want to get mastitis if I can help it!

I think i'm going to try using a nipple shield at next feed......sigh....what a rotten thing to happen to women!!

NinjaT Max has his needles on Monday so I'm hoping it wont make him awful. He has pretty chunky thighs so hopefully they will just absorb it up nicely!!! I'm hearing you with the blocked ducts...yeow!