Depo

I am 25 and have been off the shot for 3 years, I was on it for 3 years too. I have had multiple stress fractures in my feet and also a compression in my spine. I have been diagnosed with Osteoporosis, how can I be 25 with osteoporsois? I now need back surgery and may lose my very well paying job. Not to mention weight gain, I have never been a heavy person and I have gained quite a bit of weight, and the mood swings are horrible, my fiance must be a saint! If there is a lawsuit started I am in. Please let me know.