how do i know ihave arthritis i am 50 yrs old, about 5ft 2 inch, about 10 stone in weight which is over for me i should be 9 stone i am exercising regularly and watching what i eat starting the menopause. oh by the way i am female. my little fingers are puffy and painful and stiff, likewise my first finger and thumb in the joints, epecially in the morning. My knee joints ache especially the day after exercise. i do not wish to waste anybodies time over this, but am unsure what to do. thank you kerry