I battled the same thing. Came on 18 months ago, every 4-5 months I’d get another infection, hurt like hell, bleed, then plugged with blood. Doc would flush the ear and cut a drain hole in my ear drum and suck the crud out. That is zero fun and some of the most intense pain I've ever felt. So if they want to do that, I suggest asking for lots of numbing stuff.
From my Doc. A solution of 1/2 hydrogen peroxide and 1/2 sterile water or saline solution helps soften and flush out the residual dried blood. Drip in 3-6 drops, lay with that ear up, let it fizz for 5 minutes. Then put Kleenex or TP over and turn over to let it flush out. If you do it often enough you’ll see little specks of dried blood coming out. She told me 2x a day, I did it at least 10x. Hard to hear with a blood clogged ear. Takes a while, but helps.
My issue was my ear tube was too small to drain, it would plug and an infection ensued. Pain built up and it would drain out blood. Finally got the large ear tubes put in that ear, no more infections. Regular ones did not work. Good luck!