Stubborn blocked milk duct

[nyigi]

Hi,
I'm after some advice on how to help my stubbornly blocked milk duct.
Started having trouble on tuesday, wednesday breast was red and sore and I had fever, general body aches and super fatigue. I managed to kick that by feeding heaps, massaging, hot showers and compresses, and sleeping. Since then the fever, general body aches and fatigue have gone and the breast is much better, no more redness and only sometimes sore.
But there's still a blockage in there. I can feel a line from my armpit down to my nipple which is kind of like a thick cord and there are a few hard bumps along the way. It gets worse between feedings and massaging + hot compresses and a feed help reduce it a bit but really it hasn't changed much in the past 5 days just keeps going up and down a little.
So does anyone have any suggestions?