My aunt has a boy (4 years old. Now she wants her 2nd child So she came to know that if intercourse will happen before 2/3 days of ovulation then there is a chance of a girl child. Her period starts on 10/11 of every month and ends on 12/13 .this month happened on 10-8-16. So which date will be her ovulation date? Is this process works if yes then how? If not then please give any suggestion and which precautions should be taken in this process? And which food works more for a child .sir/madam your valuable suggestions will be good for us.