I'm confused about your question. The medication you're talking about is a birth control shot also called Depo-Provera. This is not a pill that you would take for five days it is a shot you would get in your doctors office. This is a type of birth control, you need to get the shot every three months if you were trying to prevent a pregnancy. There is a delay in returning to fertility that may be between 3 and 18 months depending on the woman. It also stops menstrual cycles in a lot of women.
It's frustrating, sweetie, I know. Keep working with your doctor. They may need to try different things to help manipulate your hormones and body into ovulating/having a cycle. Are you seeing a fertility specialist?