For me, it was progressive. I told it to fuck off for a few months the first time, despite having great health insurance. I could open it fine at first, it was just a little "pop". Kind of annoying, not much more.
If yours progresses like mine did, it won't feel like a bullshit curve, and it won't be just a pain in the ass. When it gets to the point that when you say "fuck you finger", and start to flex...and end up on your knees on the floor next to your bed, you may want to have it fixed. I sincerely hope yours goes away.
I know nothing of your medical history, so this next bit of information just goes out in general. When I showed my finger to my MD the first time, he said, "Oh wow, you've got a trigger finger, it's
fairly common in recovering alcoholics." Shortly after I quit drinking, I was also diagnosed with this
Central Pontine Myelinolysis,
very basically damage to the sheath's that cover nerve endings in parts of the brain. Alcohol is a solvent. It eats the covers off things. In the human body, it probably eats the covers off tendon sheath's and possibly nerve connection sheath's in the brain. So trigger finger can be a warning sign of much more serious damage. On a happier note, I had another scan on the ol noggin a year later and the condition was not evident. Clean livin does have it's advantages.