Ive been dealing with swelling on the middle right side of my back, and the muscle feels hard. It hurts when I sleep on my right side. I was wondering if this could be a muscle knot. I saw a GP, and he gave me medicine and cream, but nothing seems to help. What else can I do to get rid of it?

Sounds like you may be dealing with a muscle knot in your back. To help relieve the pain and swelling, you can try using a muscle relaxant like Flexeril (Cyclobenzaprine) along with a topical pain relief cream like Voltaren Gel (Diclofenac). Additionally, applying a heating pad to the affected area and gently massaging the muscle knot can also help to alleviate the discomfort. Make sure to avoid sleeping on the right side to prevent further aggravating the muscle. If the symptoms persist, it would be best to follow up with your GP for further evaluation and treatment.