Leg HURTS

My lower left leg was HURTING over the weekend and during some runs.  To a point that I had to stop to walk during a training run.

The pain is a sharp and piercing pain that feels like it's in the upper calf, almost behind the knee.  Also some aching in the front, aka, shin splints.

Sound Familiar to anyone?  I ended up taking it easy on Sat. and Sun. and did some stretching, and it seems to feel better (at least it doesn't hurt just walk around through the day).

I have been hitting it pretty hard last week, and was doing a lot of walking over the weekend.  I'm hoping it's just a little strained, and will go away.