Having clogged milk ducts is another painful breastfeeding problem. It really shouldn't exist because of evolution and the PAIN. You can get clogged ducts from having an oversupply of milk or not draining yourself enough while you pump. I can't stress enough how important it is to EMPTY YOUR BOOBS! Don't listen to your LC, mom group, or your pump's instruction manual when it tells you "pump for 15 minutes" or any given set time. If I did that, I'll get clogged ducts and mastitis every day all day and I'd lose my milk supply. Oh yeah by the way, clogged ducts are basically the "prequel" to mastitis so getting them out is pretty important. You'll know if you have it when one boob isn't producing its usual amount, you have a hard lump on your boob, white spots from the milk coming to the surface skin, you can have sharp pains there, and some swelling as well. Treatments include expressing in a hot shower, applying vibration on it, the Haakaa-Epsom salt method, continuously pumping, and get this: having your S/O suck it out (apparently this is the most effective way). Sunflower lecithin is also good to take to not only get rid of clogs but to prevent them so you can take it every day like a supplement, especially if you're weaning. The last picture I shared is a picture of a clog (yours can be more or less), it will be pretty mucousy. Just to throw out there, not all clogged ducts hurt! And don't forget to PUMP UNTIL EMPTY!