Oh Dot Face, that sounds terrible. It sounds like you're right on top of massaging and trying to clear that blockage which is great. Does it seem the blockage is recurring in the same spot?

Do you suppose there could be something causing that blocked duct, like a bra, the way bubs is feeding (a misplaced nose or chin can do it), a seat belt, the way you are sleeping? If you can pin point it, it might help stop it recurring, as you can try different things to stop it, like Kim suggested.

Feeding in different positions definitely helps, so give that a try.

As an alternative - you could find a women's physio who could use ultrasound on the lump to see if it can break it down. Seem times some mums need a bit of extra help getting rid of a blockage.