My mom was recently prescribed Fosamax. She took one pill in the...

I have been diagnosed with osteopenia and started on Fosamax yesterday. I took ONE pill also and today I woke up with SEVERE bone pain made worse by bending and any movement. Also taking a big deep breath was painful/imposible today. I wished I had found this site on Saturday and would have thought twice about taking it. As an RN I tell my patients that there are often a long list of side effects with any medication and some patients have adverse side effects and some don't. Some have temporary side effects while your body adjusts to the new medication as well. I paid for a 4 month supply of this med and will not be taking one more pill. The first med my doctor talked about is the once a year IV medication called Reclast. Has anyone had any luck with other medications for osteo?