Yes, I've been bitten by a poisonous spider. Not a fun experience. The bite was on my right leg- on my quad. At first it started swelling a little, hot and red. Then it started really growing and pussing up. I have a picture of the wound swelled well over 3/8" high- kind of like a giant pimple. The redness expanded to about a 4" circle and it got to the point where it was cripplingly painful to walk. I went to the ER where they didn't do much- didn't lance it, and just gave me some antibiotics...
Well- I'll spare the gory details of what happened next, but it finally did rupture a day or two later. Suffice it to say that it was on par with any Quentin Tarantino movie I've ever seen. There is no scar (I don't believe) but I do have a small divot in my leg where that wound was (not visible, but if you press in, you can feel it clearly).
Good luck! If I learned anything from my experience, I'd say it was NOT to wait to go to a doctor. I waited until I could no longer walk and that was not a good thing.
C-ATCH Pimg - DOB: 2/06, RATO, UJJ (x2), DJX, HIT, CA, CGC, High in Games, Reserve High in Standard- CPE Nationals 2014
RATCHX2 High Jinks vom Neuanfang - DOB 9/12 (Gotchya Day: 1/23/2013) DN, CA