I had a bone density test that revealed that I had major bone loss, so my doctor put me on fosamax. I have been taking fosamax once weekly 70mg for about a year. About 6 months ago I started noticing bruises on my legs and I know I didn't do anything to cause them, like bump into anything. I also started having really bad leg pain below my knee on the tops of my legs, shin area to my feet. They were aching, and any pressure on them, such as crossing your legs laying down was painful also. I started having pain in my lower chest. The doctor said to stop taking the fosamax for 2 weeks. I have stopped for a month now and the bruises have subsided a bit, but no more leg pain (which was my main concern) and the chest pain is gone too. I will NEVER take fosamax again.