Short-acting contraceptive pills are recommended to be taken orally from the first day of menstruation. If you take the pill seven days after your period clears, you can have intercourse without condoms, and the contraceptive effect is 99%. If you take short-acting contraceptive pills for the purpose of regulating menstruation, you should take them from the fifth day of menstruation as far as possible, in line with the normal artificial cycle, and your period will come 5-7 days after you stop taking them, which not only can play a contraceptive role, but also can play a role in repairing the endometrium. When the short-acting contraceptive pill is taken orally again for more than three months or six months, the liver function and kidney function should be reviewed regularly to avoid any chance of damage. If the oral contraceptive pill is for cycle regulation, it is important to review the hormone test after the end of oral intake to ensure that the hormones are normal.