I was in a similar situation at about 9 weeks.
I tried block nursing (with twins!), so I'd feed both twins from one side for 3 hours, then switch sides. During the first cycle, my left boob reached unfathomable proportions (and was so tender, I struggled to touch it to start manual expression) and I stopped.
Having reached this unprecedented fullness, I expressed the whole lot off the boob
(couldn't stop once I started as the relief was like a drug
). Got 10oz off that one side in about 5 mins.
I don't know whether the process of getting rediculously engorged and then expressing to nothing sorted out my oversupply, or whether the timing was just a coincidence and it would have calmed down anyway, but I've had much more controlled boobs since then.
I think what I'm trying to say is that I did what I had to to get through each feed and so each day. It did all calm down in the end (was definately all ok by about 10 weeks, though don't remember exactly how long it took) and though I'm having smaller problems now that the babies are sleeping longer at night, we're generally feeding on demand and not having issues. I do get engorged as soon as I go near a pump though, so I only pump if I have a reason to or I get very full and the babies show no sign of waking.
Sorry for the long ramble. I'd recommend trying all the suggestions people have given - they'll either help or they'll keep your mind occupied while time works its magic 
Good luck!