How can pregnancy occurs

The embryo is attached to the placenta by an umbilical cord. After nine weeks, the embryo is called a fetus and is about the size of a peanut. It grows for about days in total approximately nine months before the baby is ready to be born. We use cookies to give you the best possible user experience. By continuing to use the site, you agree to the use of cookies. Privacy Policy Cookie Preferences. Error was Detected. Your browser doesn't support JavaScript code, or you have disabled JavaScript.

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Search Close Search. How Does Pregnancy Happen? Pregnancy starts and progresses with specific body functions. This liquid can contain thousands of sperm. The sperm enters the body through the vagina, then travels through the cervix and womb to the fallopian tubes, where the egg is usually fertilised conception.

The egg can be fertilised by sperm contained in semen or pre-ejaculate. The risk of getting pregnant in this way is very low because sperm can only live for a short time outside the body. However, if you're not planning a pregnancy, it's important to know that it's possible to get pregnant in this way.

If you do not want to get pregnant, you should use contraception. For information about the different methods, see: which method of contraception suits me? It's also important to remember that only condoms can protect you against both pregnancy and sexually transmitted infections STIs. If you use a condom, put it on as soon as your partner's penis is erect, to prevent any sperm from coming into contact with your vagina. This information does not replace the advice of a doctor. Healthwise, Incorporated, disclaims any warranty or liability for your use of this information.

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Important Phone Numbers. Top of the page. Topic Overview Most women are able to become pregnant from puberty , when their menstrual cycles begin, until menopause , when their cycles stop. Ovulation, fertilization, implantation All the eggs for a woman's lifetime are stored in her ovaries.