What does a clogged duct feel like!?

Em

My left boob is suddenly extremely tender to the touch I just tried to pump it out even though I pumped an hour ago cause I’m just assuming it’s a clogged duct but DAMN I’m sore 😣 I had an appointment with the lactation consultant today to work on babies latch but I’m still pumping not sure if that has anything to do with it ☹️