I got the depo-provera on march 5th but starting yesterday i've been having really sharp pains , bad cramps, & now pinkish reddish discharge . am i pregnant?

Normal depo effect: Irregular periods are the norm on depoprovera. Many patients have no periods at all. Others will experience irregular menstrual bleeding. This is how Depo-Provera works. If you are not satisfied with the bleeding pattern on Depo-Provera then consider using a different birth control method. If you think you might be pregnant check then check a home pregnancy test. They are cheap, reliable and available.