Cobwebs and dust allover my room constantly?

So, first off, it started with just my rooms always being really dusty. ill dust the entire room one day and a couple days later it will be filled with dust again. And now recently there's starting to be little spiders in their webs on the window. And usually the beginning of a web or a cobweb in the corners of my room, usually with nothing in them. What the hellio is going on in my room??? =(