Please help! Clogged duct?

Dana

Yesterday afternoon out of nowhere I started having pain on the side of one of my boobs. I’ve been breastfeeding for 9.5mo and never had any problems. No fever or redness. Just extremely painful when touched. Could it be a clogged milk duct? I’ve been putting my daughter to that breast first and I’ve tried massage and heat but nothing has worked yet. Please help :)