Hi Imran, Welcome to HealthcareMagic Forum.
You haven't mentioned your Height and weight? You are having Arthirtis as you said you are obese
. Kindly consult a Orthopedist and get a Knee x ray
done to rule out if you have Osteoarthritis
. You may want to exercise regularly and try reducing your weight. Eat healthy balanced diet which includes Fresh fruits and green leafy vegetables. Avoid Junk.
Wish you Good Health.