Two Physical Ailments

So as I biked in again to work today, my legs were in pain… terrible pain.  🙁  The tendons that are right above the knee on the inside of the legs were in excruiciating pain!  I barely got to work in 40 minutes!  The muscles right above the knees were swollen, feeling like about to tear!  I put ice on those and tried to stretch…  so lesson learned?  Stretch, stretch, and then stretch some more!!  Erg… 😡

Second, I started seeing some really dark spots on my right thumb… here’s a picture attempt.

Is this due to some kind of lack of nutrients?!  It’s darker than it seems…  Mom?  Mary?  Sanghee?  Tina?  I need some nurse/doctor advice!!  Or am I just overworrying?