On my right hand for the past few months if i bend or use my middle right finger, the area right at the joint hurts. the pain can be light to very bad and moves up the finger and palm and i have to stop using that hand for a minute. never injured.

Needs examination: Possibilities include trigger finger and depending on you age degenerative or inflammatory arthritis, or even trapped nerve (cervical radiculopathy or peripheral nerve problem). A doctor examination would be a good place to start. If the cause remains unclear after this tests such as bloods, xrays and/or referrals to specialists can be arranged if needed.

Right finger pain: Sound like a tendonitis early or incipient "trigger finger" . Steroid injection can help.. May also be due to ganglioma and small nerve tumor ( benign), or arthritis. though no injury our fingers are used repetitively. Conditions like DM can exacerbate . Does motrin like products help? f/u /w/ doc xrays can see if arthritis https://orthoinfo.aaos.org/en/diseases--conditions/trigger-finger