K2 symptoms and conditions

I had pain in my lower back and left side of my hip, while sleeping, the pain woke me up. I've been on Fosamax D for nearly a year, but I've been reading about the terrible side effects, that I am not taking it anymore, even if my doctor insists that it does more good than bad for my bones. I stopped taking Fosamax D for about 2 or three weeks and the pain stopped, thank God. I am looking into other natural alternatives like Vitamin K2 to build strong bones, in addition to Calcium supplements, Vitamin D and magnesium, and yesterday I read about the best Vitamin D comes from exposure to sunlight.