The best relief for your problem is a massage from a physiotherapist. They are able to release your knots by a gentle massage two times a day. Also try heat pads available in pharmacies which lessen the muscle tightness.
Physical therapy exercises can be done to get relief. Apply hot packs on the site. Do strengthening
exercises to strenthen the muscles which can bring down the pain and give you relief.
A cream such as Voltaren can reduce the swelling. Swimming helps to work the muscles, and heating pads relieve muscle tention. Your best bet is a massage or physiotherapy.