Your first two appointments will be 1 month apart, all appointments after that will be every two months for on time injections. You will have a target date for your injection which is the same calendar of each month (set by the date you receive your first injection). As long as you receive your injection within a week of that target date (either a week before or a week after), your injection is considered on time. We must do HIV testing at every appointment, other STI screening will be offered at every appointment but only required every 4 months.