I was 22 years old when I had my first miss carriage. I also had an ovary baby and went in for an emergency operation. Since then I only one ovary as my left side was damaged. I had 4 miss carriages over the years and have decided to go on Depo -Provera. After the second shot my doctor noticed that the Depo is not working for me. I have been off the Depo -Provera for 3 months now and have not yet received my period. Should I be worried?