Thanks for the reply CaMama,
But nope, I didn't do anything out of the norm that day. I've been watching it, and there's no redness, swelling, or bruising going on either (it's times like this where you wish it would show something, at least it would narrow it down) lol.
I've noticed though, if I stay off of it, it feels much better, but I can still feel the place by either pulling my leg up, or if I run my hand down the outside of my thigh. (feel as in soreness in my leg)
I tell ya what it feels like though, it feels like some kind of bruise, but there's no marks there of any kind. So yeah, I'm stumped too. Old age perhaps, lol. I'll be 30 in 12 days :(