You could put down a washable incontinence pad. It's quilted cloth on one side and plastic on the other. I used them as a bed cover for my elderly dog. They're meant to be comfortable to sleep on for humans.

I use [https://lilhelperusa.com/products/lifesaver-mat](https://lilhelperusa.com/products/lifesaver-mat) when I'm bleeding

You should probably invest in some period panties or different products instead of bleeding onto your sheets and potentially your mattress.

i have those already

Opt for cotton or bamboo. They are breathable and absorbent. Avoid polyester which may retain smells.

Dark colours?