They should clear up, eventually.
A bruise is what you see when there's bleeding inside the skin, or in a muscle. Yes, sometimes the blood will run down the inside of the leg, and show up in the ankle or foot. Gravity.
(I've had that happen a few times: muscle tears in the calf, blood showing up in the ankle, and even on the sole of my foot.)
I'd guess that the internal blood clot from your original injury got torn, somehow, and it started bleeding again. You don't have damage in your ankle or foot; that's just where the blood pooled.
In my case, the calf muscles are full of scar tissue, and it's pretty easy for me to re-injure them. I hope you do better, long term.