This may sound strange that you're still not pregnant. Fertilization of your egg by the sperm will only take place near the end of this week (read more about fertilization in the ‘Your Body’ section below).
Although you'll have to wait to find out what color to paint the nursery, your baby's gender will be determined at the moment of fertilization. Out of the 46 chromosomes that make up a baby's genetic, only two will determine the baby's sex, one from the sperm and one from the egg. These are known as the sex chromosomes. Every egg has an X sex chromosome; a sperm can have either an X or a Y sex chromosome. If the sperm with an X chromosome fertilizes your egg, you'll have a girl; if the sperm with a Y chromosome, your baby will be a boy.
My Body
Your uterine lining, which will nourish the fetus, is developing and your body secretes follicle-stimulating hormone (FSH), which stimulates an egg to mature. At the end of this week, if you have a regular 28-day menstrual cycle, you will be at the midpoint of your menstrual cycle, ovulation will occur. Your ovary will release an egg into the fallopian tube.
This is when you're most likely to conceive a baby. If you have sexual intercourse without protection around the time that you ovulate, you can become pregnant. After your partner ejaculates, millions of sperm travel through the vagina and hundreds of them make it to the fallopian tube, where your egg is waiting. Only one sperm succeeds in penetrating the egg and fertilization takes place. When that happens, you will be pregnant. But you will not feel any body changes yet.
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