Is this how arthritis begins?

I know we should not get medical advice from the interwebs and I promise I will ask my doc (a mere child since my old doc retired) at my next physical. That said…

I’m in my mid 60s, very active, excellent health. My BMI is dead nuts in the middle of the healthy band. I’ve never smoked. I don’t drink to excess or use drugs. I don’t wake up creaking and in pain. I sleep really well. I am truly a lucky guy.
But… I have noticed that the knuckle joints on both my pinkie fingers are starting to get stiff and hurt a bit if I sit still and don’t use them. It is trivial. If I am sitting still watching TV or reading they will stiffen up a bit. Five seconds of wiggling my fingers makes the stiffness go away.
Is this how early arthritis feels? Should I worry about this?
If you have arthritis is that how yours started? Where did you first notice it? Do you take meds for it? Baby aspirin?