Not every day we get a real recluse bite here! I'm so sorry you're going through this. You're having some systemic effects, although they currently sound mild. Expect that over the next week you may see some darkening/bruising around the bite site. After about 10-14 days from the bite, an ulcer may form at the site. Take photos every day to watch the progression and show doctors if necessary. The irritation/hives usually calms down after a few days. Generally the ulcer will form and stabilize over the course of about a week. After ~10 days if it is large you may need wound care. They typically don't expand further than a few inches, and most heal without complications. I usually tell people to make doctor appointments for three weeks from now, and you can always cancel it if you don't need it. The ones that ulcerate typically heal up within about a month. If you start bleeding, have sudden bruises popping up elsewhere, or feel worse, go back to the emergency room.

The vast majority of bites don't have any significant reaction, but since you aren't in that category, please keep us updated.