Clogged duct?

I'm exclusively pumping my newborn. I pump around every 3-4 hours. This morning I woke up with EXTREME pain in my right breast. Its not red or warm to the touch, so I'm thinking it's a clogged duct. Best solutions? Pumping is extremely painful, and so are my letdowns. Im currently using a heating pad to help with the pain. Anything else that will help?