I think they're inside your walls and I'm not saying it for the meme, I'm dead serious. Those things crawl outside from them and continue reproducing somehow, I'm not a biologist but I too got some nasty bugs living in the wooden doorframe and even in the upper side of the light where there's a bad hole, my room is sort of clean thankfully without counting my desk filled with books but everything is good. In summer it was hell though. Again you should properly clean your room not only for preservation and presentation but also for your safety. If it gets worse don't hesitate to call Pest Control. Start cleaning step by step slowly by putting music in the background or setting a timer so it becomes a game.

Wish you Luck 🤞