Has anyone ever experienced a clogged milk duct while pregnant?

Today I felt a pea-sized lump in my breast that wasn't there before. I had a breast ultrasound a couple of weeks ago to follow-up on a cyst and everything was clear for both breasts.

During my breastfeeding class the lactation consultant had a model breast and had us feel the example of a clogged milk duct--mine feels just like this. I didn't think it was possible to get before your milk came in, but according to Dr. Google it is.

I've been massaging it, but what else can I do? I'm planning on breastfeeding and want to make sure this is unclogged before my milk comes in.