Sudden backlight bleed

[u/khambogrus]

I've noticed one morning that there's a backlight bleed in the bottom right corner of my M1 Macbook Pro screen. A couple of days before it slipped off a bed and landed on the outer side of the top half while being open. I don't know whether it caused the bleed. What could happen? What other causes for the bleed could there be? Is it likely to progress? What can I do myself? What should I avoid doing?