Sperm cells are either X or Y. The Egg cell is always X. If X-Sperm cell meets the egg(X) the baby will be a Girl (XX). If Y-Sperm cell meets the egg(X), the baby will be a Boy (XY). The Y-Sperm cells move fast but die fast (its lifespan is about 24hrs). X-Sperm cells move slowly but survive longer (up to 3-4days).

Therefore, if you have intercourse some days before ovulation, most of the Y-Sperm cells would have died leaving mostly X-Sperm cells to fertilized the eggHere’s a simple way to calculate your ovulation period.

1. From the first day you see the blood of your period.

2. Pick up a calendar and count 15 days including the first day of the blood stain.

3. Mark the 15th day with a pen.

4. Mark 3 days before the 15th day, and mark 3 days after the 15th day.

6. You will notice you have 7 days marked.These 7 days are your ovulation/fertile days also known as unsafe period.That is if you have sex on any of these days, then you have 98% chances of being pregnant.

7. Do this every month diligentlyFor Example1. If your period is 11th July, ,2. 15 days after the first day of the blood stain will be on 25th of this July too (2weeks after) counting from 11th.3. 15th day is on the 25th July4. 3days before the 15th day is 22, 23, 24.5. 3days after 25th July is 26,27,28.6. 22-28th July (7days) is when you are ovulating. It is your fertile period.

**Don’t forget that the 4 days is...
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