I'm a 1st responder at work. Trained in cuts, bruises, bug bites, spider bites, snake bites, heart attacks and strokes. My advice? Go to work, look up my counterpart. I'm not a doctor or a p.a. but my boss's respect my advice and if you show up, you generally won't get written up for being too sick/hurt to work. I've been bitten by a black widow when I was 10, not a picnic, but not a game ender either. Makes you sick (at least it did me) so if it was a bw or a Brown R L I would worry, if another, let my counterpart make the call, don't get in trouble, and keep your job. If a Black Widow or Brown Recluse, let the ER doc's make the call when they write your absentiesm note.
Good advice Boyd. BTW my cousin was bitten 2 different times last year by a Brown Recluse. She was put on heavy duty antibiotics both times.
Good luck onenoodle.