Well if your interested, it benefits me to explain as I'll have to do that for the practitioner at some point unless they can diagnose the issue with a hands on approach..
Started with a mild but sharp pain when I was changing sheets! That feeling passed in a few moments but since then something constantly hasn't felt normal. I don't feel any pain when doing body weight exercise, going up or down stairs or walking (haven't done any jogging or sprinting since then). But there is always a feeling of fullness around the bottom of the kneecap and a tingling. Any day that I do a lot of walking, afterwards the is a throbbing and feeling of warmth in the area which passes after a few hours. At no point do I feel what I would describe as pain, whether I'm being active or not.
I don't know if the issue is somewhere in the joint, the large tendon that connects with the kneecap or with supporting ligaments. There is definitely what I would describe as reduced stability in the joint. ie it seem 'loose' somehow. Sometimes I get a more pronounced feeling like there is something stuck in my knee or a fullness, particularly when I'm walking. But if I pull my heel to my backside, quite often there is a good pop and that feeling subsides.
A few times I tried taking aspirin at night and applying AI cream. Then it always seemed better in the morning but after a while it comes back.
I think many people ignore warning signs until something irreversible happens. I love my exercise so I want to address this early.
Kudos if you've read this far!