| How old are you and what specific arthritis does someone in your family have? Only certain types give you a higher probablity to acquire arthritis than the general population so maybe you can lighten up on your expectations!
In almost every case, joints that become suddenly painful can be directly attributed to some varied level of use (extended activity in one sitting, decreased duration between activity, new activity, altered technique of activity, different level of resistance with activity, etc.). Yes, there are diseases of different types which are known to be responsible for similar symptoms, the occurence rates are much lower than the media allows us to believe.
Slow onset of symptoms? As you've seen, most physicians are of little help for common complaints and pass them off as normal, take a pill type of complaints. It's highly unlikely the supplement you've taken had a positive effect that you would notice so quickly - not saying impossible, just not likely. It is quite possible you are on the right path with your thought process though as faulty dietary intake is a primary player in joint pain, muscle aches, fatigue, depression, and a long list of other less common complaints.
Reflect on your activities during the few days prior to noticing the symptoms - was anything out of your normal routine?
(disclaimer: this post is not a substitute for medical care, suggestion for remedy, or specific advice on healthcare. it is a generalization and not to be mistaken for a diagnosis, attempt to treat, or attempt to cure) | 
PAIN IN MY FINGER JOINTS!!!!!!! 
