Hi, I have been on Depo Provera for 11 years and never had my period. I was due for my next shot on 23rd February 2013, but did not go cause my husband and I want another child. Recently after sex, I have had light pink bleeding , but the next morning it s gone. I have now started to see specks of blood when wiping. What could be the cause of this? When will my period return and how do I know when I am ovulating if no period?