I was at the gym a few weeks ago and after running a few miles I decided to attempt a new stretch. While in kneeling position/sitting on the palms of my feet, I kicked one leg out at time and laid down on the mat flat on my back to get a good stretch on the leg that was still tucked back with me. I did this on both legs in what I believe to be equal lengths.
The following day I felt a significant soreness in the left knee which has continued to this day (3-4 weeks). The pain is felt when I bend the knee backwards as far as I can as well as if I stretch the knee completely forward (straightening out my leg) as far as I can. I also feel it slightly when I walk, especially when I wake up in the morning or have been sitting at work for a while.
It is definitely on the left side of the knee (outer-left) and is felt somewhere between the knee cap and the back of the knee when I am in motions/positions of pain.
I don't have an visual bruising or swelling in any part of the knee and I am still able to run so I haven't felt to need to get it looked at by an expert. Does anyone have an idea what this may be and or should I continue to ice or go see a pro?
Any feedback would be greatly appreciated. Thank!