is very common that you get generally bilaterally. Ice therapy would definitely help to reduce the inflammation. We also advise you to use knee cap which would help to prevent the knee from damaging further and also to maintain the quadriceps muscle tone.
You can take Ultrasonic therapy in one of the nearby physiotherapy
clinics which would help to heal
the damaged cartilages along with shortwave diathermy which would help to improve the blood circulation. Wear knee cap so that you will feel firm while walking or climbing stairs.
This is a general strain and for this you can follow these measures: one keep a pillow right under the knee while sleeping, next is you can keep ice in the painful area for about 5--10 minutes, if pain
still persists you can stretch your body by twisting the waist on both sides how we used to do in the school drill similarly you can try! One time you can do hot water fermentation that would help to reduce the muscle strain.