Juz count a day..Start counting it on the days u period,which is means day 1....If usually ur period will end a week(7days), means day 7 lo...& the next day will b a day..8,9,10 & 11 (safe for having sex)...Every women women have 28 rounding day for our uterus/ovari..Day 1 which means ur first day of period ON THAT MONTH (not ur first period on ur age 12)..Dun mistaken k..

Day 12 will quit dangerous la..try to avoid having sex on day 12...

Every 13,14,15 of the days will very easy to get pregnant,try to not having sex during tis 3 days..But mostly i will try to avoid having sex start on days 12 until day 16 (5days).....Start on day 17 will be safe to having sex d...

Must start record on the day u period on tat month..Cuz sometime our period r not 'come' on same day of last month..Sometimes will b early & sometime will late too...So u dun need to worry,juz start record on the day ur period 'come'...

This is real..If u r not believe me,u can try to do reserch on ur Form 3 (Bab 1) & Form 5 Science text book

Or ask ur bf/husband shoot their sperm out la..but he must b very expert & fast...

Best is dun do. I dun want pills to have effects on my gf whether is short term or long term.

Even its has its own benefits but we never know the long term effect.
or it may cause addiction to her, she may not notice it.

There is a possibility that if one day she dun take, the body start to react as if its hunger for the chemical reaction that it has for a period. Well conclusion is best dun take.