We seem to have great relationships with bugs here at cf. Dude you're fine. It does tho look quite a lot like my brown recluse bite, it was weird, the skin around mine turned black ish and got all bruised and it killed some hair follicles, kinda cool actually. The exterminators estimated we had around 200 brown recluses in our house last year. There was this cardboard box we kept glass jars in under the stairs, they opened that up and prolly fifty recluses came out, that has to be the scariest thing i've seen in a long time, they ran everywhere.