Knuckle pain

[Username458]

I posted prior about pain in my knuckle starting in my left index finger knuckle. Since then, in early January of this year it transferred to the opposite knuckle. I went in to get tests done and they came back negative for RA, OA, and gout. Everything looked good on the x-rays and there was no cartilage worn down on the joints. Since I got it tested, the pain has continued to transfer to surrounding knuckles but not to the same pain level as the original left index finger knuckle. Does anyone here have any idea what could be happening? I did talk to my doctor after the tests came back and he offered hand therapy which I am planning on following up about if the pain doesn't reduce in the next month. I'm an 18 year old male if that information is of any use.

[Paxiled]

Use a cell phone a lot?