New moms have specific contraceptive needs. They want birth control that is effective, simple to use, can be used over a long period of time, and allows for sexual spontaneity. An important question often asked by new moms is, “How soon after giving birth do I need to start using birth control?” Usually, doctors recommend that birth control be started six weeks after giving birth (if medically it’s okay to have sex) or when menstruation resumes.