No pain no gain?

I have read in different articles about Alan Webb and Meb Keflezighi both using post-workout ice baths for recovery. I've got a left-leg problem from the hip to the calf that just won't go away, but I'm not willing to take time off -- not yet, anyway -- with Boston now seven weeks out. After today's long run I tried the cold tap in the bathtub (no ice, though) for ten minutes. My goodness did that hurt. And it also seems to have helped. Of course, maybe it's the four generic Advil.