@balardjudy,
It's been many years since Judy posted but I found this in a search about Forteo. I, too, get spasms after taking Forteo. My doctor had never heard of it, but suggested I had too much calcium in my body and taking Forteo injected even more, so he said to stop taking calcium pills. That seemed to help for a year but today I injected Forteo and had painful pussating lower back spasms for over 3 minutes. I just laid down, did some lower back stretches and it eventually went away.