I had an uncle once who used to build custom log cabin homes in N.W. Michigan. Due to an accident one day in the mill he lost his thumb (to the knuckle,) his index (just below the 2nd. knuckle,) middle (to the 1st. knuckle,) and his little finger (to the 2nd. knuckle.) Needles to say his bar chord and rhythm playing days were over. But this man learned in his mid-forty's learned to pick lead guitar like nobody's business. He was really incredible to watch. He was a huge part of my inspiration growing up. The things we as humans endure, and overcome are astounding.
It may help to keep that in mind as you play through the pain Karen. It can only get better from here.