“Possible cubital tunnel?”

I have been getting nerve issues for around 2 years now. I saw a doctor this year about it as it has worsened, and after being referred to a specialist and having had conduction tests which were inconclusive, I've been offered surgery for cubital tunnel. I am concerned that this might not solve the issue as, on going to see my doctor again, I am being referred to another neurologist this time due to sudden and random losses of sensation all over my body. This is as well as two areas (my left calf and lower back) having a constant lack of sensation. I also experience pain from my neck, down my arm to my little and ring finger, it is not exclusively from my elbow to my fingers as the first neurologist keeps saying (I have corrected them they just don't listen). And I am also getting issues with my cubital nerve on both arms now. Is it possible there is another diagnosis, and getting surgery for cubital tunnel is unnecessary. For reference, I am a 20y/o female.