This treatment is being suggested on bases of the information provided. However I would like to examine & investigate you  in detail. -Control  Hypertension, Diabetes or  metabolic disorder, if there is any. --. Sleep on a hard bed with soft bedding. --. Keep a  pillow under the knee. --. Avoid painful acts & activities. --. Fomentation with warm water/ Gel pac . Let the part not be exposed to cold. -- .Do mild exercises for back and lower limbs. --.visit my YouTube channel 'DrN C Gupta' and watch 'Me & My Yoga' and 'Yoga Simplified'. Kindly subscribe to the channel to get continuous guidence & notifications. It is free. --or else contact a physiotherapist. https://youtube.com/channel/UCPEQc6B1ywzwin048JSu6rw -Any way it may be tried, --. Ugesic (Piroxicam) 20mg 1 tab once a day x 5days --. Caldikind plus  (Mankind) 1 tab Once  a day x 10 days. -(You may need help of your local doctor to get these medicines.) Kindly make sure, there is no allergy to any of these medicines. --For emergency treatment visit nearest hospital. --Wish you a quick recovery & good health. Thanks. Dr N C Gupta MS (ortho.) DMC no.3624

Get an Xray done. Visit your orthopaedic surgeon for knee examination. there may be effusion in the knee which may need aspiration.

For an accurate diagnosis, a detailed assessment with clinical examination and proper history followed by appropriate investigations is needed. For the treatment or medicines, Visit nearest orthopedic surgeon or consult me online.