I am a long time runner. I took up road cycling in July and I love it. Unfortunately I developed knee pain after a metric century 2 weeks ago. No swelling, no "pop" just aching. It doesn't really hurt unless I'm riding or spinning. Running is still fine. I've avoided riding for 2 weeks now but I can still feel the "full" feeling in my knee. I was told by one guy it could be the spd and I should switch to look pedals. I definitely am keeping my legs straight. No in or outward movement. HELP. I don't want my riding career to be over so quickly. Especially since I just bought a beautiful new WSD bike. (Trek)