I have this red bump on my leg the size of a quarter and in the middle of it, is like a tiny bubble or blister in the form of a weird circle. also, i was cleaning my closet and there was spiders that looked liked daddy long legs. so i don't know what?

Bite: This may well be a spider bite but in the absence of systemic symptoms it most likely was not by very harmful spiders like recluse or widow spiders. For this bite, observe for signs of superimposed skin infection which would be spreading redness and warmth. Should this occur see a physician. In the meantime apply a skin antibiotic like bacitracin.

Bite: "Daddy long leg" spiders don't bite like that, but in the same environment there could be other insects that do. The most concerning of the likely possibilities would be a brown recluse spider. I would be seen at an urgent care facility and followed closely for signs of necrosis and/ or infection.