How do you time sex when TTC to have a girl or boy?

Question

Yes, it can be done to better your chances. I'm just too lazy to read up on it. =)

Answer 1

You are probably thinking of the Shettles Method which is based on the premise that sperm carrying the X and Y chromosomes have different characteristics and that you can influence the reproductive environment to favor one or the other. While there is some controversy surrounding both the credibility and the morality of the method, here's how the theory goes:

It is the sperm that fertilizes the egg that will determine the sex of your baby. Some sperm carry the X-chromosome and some sperm carry the Y-chromosome. If an X-chromosome-carrying sperm fertilizes the egg, the baby will be a girl. If a Y-chromosome-carrying sperm fertilizes the egg, the baby will be a boy.

The idea behind the Shettles Method of sex selection is based on the premise that the X and Y chromosome carrying sperm have different characteristics and that under different circumstances either X- or Y-chromosome-carrying sperm will be more likely to fertilize the egg.

The Y-chromosome-carrying sperm are said to:

be faster and smaller than the X-chromosome carrying sperm.
die faster than the X-chromosome-carrying sperm.
The X-chromosome-carrying sperm are said to:

be slower than the Y-chromosome carrying sperm.
be better able to withstand the acidic cervical environment before fertile cervical fluid is produced.
Based on these premises, according to Shettles, you can time intercourse, choose a sexual position that favors conception of your preferred sex and influence the reproductive environment to increase the likelihood of conceiving your preferred sex. These are the suggestions from Dr. Shettles:

To Get A Boy (According to Shettles):

Time intercourse as close to ovulation as possible: The idea is that since the Y-chromosome sperm are faster than the X-chromosome sperm, there will be more Y-chromosome sperm who reach the egg, making it more likely that a Y-chromosome carrying sperm will fertilize the egg.
Abstain from intercourse for four to five days prior to ovulation. Have intercourse only just at the time of ovulation and just before.
Have intercourse that allows for deep penetration. Shettles recommends rear-entry (aka, “doggy-style”). The idea is that the sperm will be deposited closer to the cervix where cervical fluid is most friendly to the Y-chromosome sperm and where the “boy sperm” are more likely to survive since there is less distance to travel.
Men avoid tight clothes: heat kills off both types of sperm, but will kill off the less protected, smaller Y-chromosome sperm faster, according to Shettles.
Women have an orgasm: According to Shettles, female orgasm increases the alkaline secretions in the vagina that are favorable to the Y-chromosome carrying sperm. Shettles recommends having an orgasm before or at the same time as the male partner.
To Get a Girl (According to Shettles):

Have intercourse 2-3 days before ovulation and avoid intercourse just before ovulation until 2 days after ovulation and when you have peak cervical fluid: The idea is that when you have sex a few days before ovulation, only the X-chromosome “girl sperm” will be left in the female reproductive tract waiting to fertilize the egg when it is released.
Have intercourse with shallow penetration: Shettles recommends “missionary position”or any position that will deposit the sperm slightly away from the cervix, giving advantage to the longer living, but slower X-chromosome-carrying sperm.
Women avoid orgasm: Shettles suggests women avoid orgasm because it makes the vaginal environment more alkaline, and less acidic and is disadvantageous to the X-chromosome “girl sperm”.
If you are taking longer than expected to conceive, it is generally not recommended to attempt any kind of sex selection as it can increase the time it takes to conceive.

Answer 2

I read that if you have sex 3-5 days before ovulation, your chances for a girl were greater because the sperm for them is slower, but lasts longer. For a boy, have sex 1-2 days before or on the day of ovulation. Good Luck

Answer 3

I don't know how scientifically correct this is, but I've heard that female sperm swim slower but live longer. Male sperm swim faster but die quicker. So basically, if you have sex the day you're ovulating there's a better chance a male sperm will reach the egg first. If you had sex a day or so before you started to ovulate, the male sperm would die off quicker and leave the female sperm to ovulate the egg.

Answer 4

Girl sperm lives longer but travels slower, male sperm travels faster but dies faster. To have a girl do the deed BEFORE ovulation occurs (2-3 days) and stop. May have less likelihood of getting pregnant but higher chance of a girl. For a boy have sex during ovulation.

Answer 5

ROFL... the timing is irrelevant. All that matters is whether your hubby's sperm is carrying more X or more Y chromosomes. If he's shooting lots of Y's, you're more likely to get a boy. More X's means you're more likely to get a girl. If he's shooting both equally, then it's a 50/50 chance on the sex. And if he's only shooting one or the other... well, that's how you get families full of only boys or girls.

Answer 6

The theory is that girl sperm swim slower but are stronger. Male sperm are faster but weaker. Therefore, if you want a girl, you'd want intercourse 2-3 days before you ovulate, then stop. If you want a boy, wait until the day before and the day of ovulation.

Answer 7

on the net it say sex befor ovulation gives you a better chance of a girl and on or right after ovulation give you a better chance of a boy, for me that wasnt true.
For my daughter it was the day i ovulated and for my boys it was before, i believe it all depends on who(boy sperm or girl sperm) makes it to the egg first.....doesnt matter when you do it.

Answer 8

Then take your chances.....and have either a boy or a girl. Or don't be lazy and read up on it.

Answer 9

I DON'T CARE WHAT YOU TRY, THE ONLY ONE THAT DECIDES THE SEX IS THE MALE SPERM...MODERN SCIENCE HAS DONE RESEARCH ON A TEST THAT SEPARATES THE X CHROMOSOME AND THE Y CHROMOSOME, BUT UNLESS YOU HAVE TRUMP MONEY, I CAN'T SEE HOW YOU ARE GOING TO MANAGE TO PICK THE SEX. LOTS OF LUCK ON THAT ONE!!!

Answer 10

sorry.......you cant choose the sex of your baby. No matter how much you like to think you can. God chooses......lol and its the sperm that decides the X or Y chromosome.
If you are lucky enough to get pregnant take whatever you get as a blessing and love it.