I have a similar issue Grok could have solved:

I sliced my thumb pretty good at work. ER doctor said everything was fine, even through I had no feeling in my thumb and had difficulties moving it. Stitch job was horrible too.

Two weeks later, I go to the work nurse, still with no feeling in the thumb. They send me to an orthopedic urgent care where I talk directly to a surgeon. 

The surgeon hardly hesitates, he schedules me for exploratory surgery where he repairs a severed nerve and  an almost completely severed tendon.