Question: A 28-year-old transgender man presents 4 days after sexual assault. He has not received a hysterectomy or oophorectomy, is not taking contraception, and experiences occasional menstruation while on testosterone injections and sertraline. He does not want to take anything with "female hormones" and is interested in long-term pregnancy prevention until he can afford hysterectomy and mastectomy. What is the best option for management?