Since it is impossible to diagnose a spider bite unless a whitnessed bite takes place, with a positive identification of the spider, it could be just about anything.
In hindsight I would have identified the spider and researched possible reactions to their bites. Do you remember what it looked like? Perhaps you could still find out what kind of reaction it may cause by identifying it online.
It could also just be the way you react to that type of venom. I know that I swell up in welts from mosquitos, which is part of the reason I got the necrotising effects from my bite. Only about 20% of people bitten by white tails end up with my symptoms, and my sensitivity was most likely to blame.
I'm hoping the reacurring effects don't come back. It has been 5 and half years since I was bitten, and just under 5 years since my last reoccurance.
Good look in you identification process.
Erin