Aching ribs symptoms and conditions

I am a 56 y/o female who started on Fosamax last Sunday. I have a dx of osteopenia. I followed the directions of taking pill with full glass of water and remained upright for 30 minutes before having anything to eat. I was fine on Sunday but on Monday I woke with SEVERE bone pain! My whole rib cage, back, knees and heels were hurting so bad. It felt like I had pain in every bone in my body. I could not take in a full deap breath as my rib cage was hurting so bad. I could not bend or turn without terrible pain. My energy level was zero. I immediately called my doctor who told me to hold the Fosamax (ya think?) and ordered Vit D lab levels. Apparently when you Vit D levels are off (don't know if too high or too low) you can suffer this bone pain. I am awaiting the results. The pain is better today and I was told it takes 5 days to get out of your system. I only wish I had done my homework and found this site before taking this poison. I have to say I'm a registered nurse and know that ALL medications have side effects and everyone responds to meds differently. Some side effects subside as your body gets use to it and some can experience severe allergic reactions. But it's important to weigh the risk vs the benefit. I would rather deal with osteopenia in another way. So my search begins for alternatives to Fosamax for good bone health. Has anyone had good results with other supplements/meds?