I am also a working mama and have to bump out milk for my b everyday. My left beast is painful around 21:00 everynight this week. Quantity of milk I can get from my left beast goes less and less. However, the case does not happen in my right beast. I doubt if my left beast also got the same case as yours.
My mum taught me apply heat onto my left beast, and I have to bump out milk more frequent. I am doing so and it seems that qauntity is stable in these 1-2 days.
How's the situation in your side? Is it going better this morning?