I would just to be safe, but you know that's funny. I had the same thing. Whenever I gripped anything it hurt in the EXACT same place and finger. I seemed to have this little(what felt like)bone that was round and hurt whenever I applied pressure. However, I too am a lifter.
This stayed with me for quite a while, I'd say a few months. I think it may have been some sort of bur from lifting or friction from weights. It finally went away after a while but I'm still curious as to what it was. Go to the doc just to be safe and let me know what it is. Hope I helped.