Holy Mackeral! You're the second person I've heard about that this happened to recently. One of the guys in my Cadillac club scratched his leg, started feeling sick, and 3 or 4 days later the doctors were talking about amputating his leg! Strep was the culprit.
Fortunately they were able to save him and his leg but he was in the hospital for a month.
Glad to hear you're ok. Hopefully you're right handed!