How can I relieve a very annoying knee pain?

Rest, ibuprofen. Start with rest, Ibuprofen if you do not have any medical problems where you cannot take ibuprofen. If pain persists after 1-2 weeks, then you may need to get a kneemri to find out what is causing the knee pain.
Exercises. Exercise therapy can be very helpful for knee pain, particularly runners knee. However, they must be performed in certain ways. Rest from strenuous activities and targeted therapy are key. Online resources are available on sites such as simpletherapy.Com.