I have a recurring pain/burn in my shoulder blade after a ride. I suspect it might be posture or sitting in one position too long. I have not had a bike fit but the bike is set up right. Pain usually starts after 15+miles and is very uncomfortable. I have started using voltarol gel after a cycle and hot bath etc….so heat helps. Is there a heat patch I could use whilst cycling or is my best option a trip to the physio?