I have suffered serious side effects following injections of Depo Provera, including severe headaches, bleeding for 9 of the 12 weeks between shots, loss of bone density and teeth, hair loss and early onset osteoarthritis. Because of these side effects, I am no longer able to maintain a full-time job, and therefore I have had monetary losses, as well. If all the women who have had such hideous side effects actually got together on this, I suspect this would be a huge class-action lawsuit.