Welcome at HCM.
Presence of pain at joints & pain in cold water is suggesting that you may be having inflammatory type of arthritis
.This can also be raynauds disease.In this there is severe pain
& discoloration of fingers in cold water or cold weather.
You should do following to have relief in this-
-Consult to a rheumatology doctor & get your self investigated completely.You should have CBC,ESR,CRP,COMPLETE AUTO IMMUNE PROFILE,etc.
-At present you may have a good analgesic
like advil or aleeve.Taking indomethacin
under direction of your doctor may be more helpful to you.
-You may ask for physiotherapy
from your doctor who may give you relief by giving contrast bath & other modalities.
Hope this will help you.
With best wishes.