So i gave myself a good 4 weeks break because the bottom of my foot (plantar?) was giving me sharp pain from excessive running (i was running 6 to 10 miles a day). But now when i start going back on the treadmill my knee start to feel weird and during the day when i walk it has a mild discomfort feeling (slight pain). what do you guys do about stuffs like that? Pop painkillers? Ice them? Stop running once and for all? I do have good running shoes (switch between New Balance, Saucony, Nike).