Pap smears should be scheduled to be done 1 week before the start of your period, or 1 week after the last day of your period.
Avoid vaginal intercourse for at least 2 days before your test.
Avoid using any vaginal medications (unless instructed by your doctor), spermicidal foams or creams, or douching for at least 2 days before your pap smear.
As you would need to undress from waist down, wear easily removable clothing on the day of your appointment.