Doing A Pull Up And Had Popping Sensation. Have I Pinched A Nerve?

Hello, My name is Alyson. A few weeks ago I was doing a pull up and I ended up feeling/ hearing a popping and grinding sound, followed by extreme pain with lack of mobility. That lasted for about a week. Now the pain is less, though still very present and every other day my fingers get tingly and numb for a few hours. Sitting definetly triggers my symptoms and I happen to have an occupation that requires sitting in non ergonomitcal positions for long periods of time. What do you think? Did I possibly pinch a nerve? Thanks, Alyson