Dear patient you seem to have early stage osteoarthritis. Pain on squatting and difficulty in getting up indicate this. I would like to advise xray of both knees anteroposterior view lateral and skyline view. Please get it done from radiology centre nearby you. Meanwhile start tab diclofenac sodium 50 mg twice a day for pain relief. Avoid squatting and crossed leg sitting. Start quadriceps and hamstring strengthening excercises.