Reviewed by: Steven Dowshen, MD. Larger text size Large text size Regular text size. Can a girl get pregnant the first time she has sex? Here are some ways to reduce your chance of pregnancy and STDs: Abstinence. Home Common health questions Pregnancy Back to Pregnancy. Can I get pregnant if I have sex without penetration? Getting pregnant Pregnancy happens when a sperm fertilises an egg, which can happen even if you've not had sexual intercourse penetration.
The ovaries release 1 or more eggs ovulation days before a period starts. What if I did not have penetrative sex? It is possible to get pregnant if sperm comes into contact with the vagina, if for example: your partner ejaculates very close to your vagina your partner's erect penis comes into contact with your genital area vagina or vulva The risk of getting pregnant in this way is very low because sperm can only live for a short time outside the body.
Preventing pregnancy If you do not want to get pregnant, you should use contraception. At the same time, the lining of the uterus womb begins to thicken and the mucus in the cervix becomes thinner so that sperm can swim through it more easily. The egg begins to travel slowly down the Fallopian tube, a tube that stretches from the ovary to the uterus.
If there has been recent sexual intercourse with ejaculation by the man, the egg is most likely to be fertilised in the Fallopian tube.
The lining of the uterus is now thick enough for the egg to be implanted in it after fertilisation. As soon as she has conceived, the amount of oestrogen and progesterone in her blood increases. This causes the uterus lining to build up, the blood supply to the uterus and breasts to increase and the muscles of the uterus to relax to make room for the growing baby.
If the egg is not fertilised, it passes out of the body during the woman's monthly period, along with the lining of the uterus, which is also shed.
The egg is so small that it cannot be seen by the naked eye. An egg can be fertilised for about hours after it's released. You're most likely to get pregnant if you have sex within a day or so of ovulation.
Try not to get too stressed about falling pregnant. Having unprotected sex every couple of days around the time of ovulation is the best way to make sure there is always a good supply of sperm to fertilise the egg when it's released. Many factors can affect your chances of falling pregnant. These include your age and your partner's age, your lifestyle, your weight, whether either of you has a chronic illness, and how often you have sex.
If you are under 35 and you are not pregnant after a year of having unprotected sex, see your doctor. If you are over 35, it is a good idea to seek help sooner. A pregnancy test measures the hormone human chorionic gonadotrophin hCG. You can buy a home pregnancy test from a pharmacy and use it 4 days before your next period is due. If you think you might be pregnant, see your doctor after you have missed a period.
They will confirm the pregnancy and give you advice about looking after yourself and pregnancy care. Every normal human cell contains 46 chromosomes 23 pairs. Chromosomes are tiny threadlike structures made from DNA, which each carry human genes.
Genes determine a baby's inherited characteristics, such as hair and eye colour, blood group, height and build. When a sperm fertilises an egg, 23 chromosomes from the father pair with 23 from the mother, making 46 in total. The sex chromosome from a woman's egg is always the same and is known as the X chromosome. While most couples do get pregnant after one year of unprotected intercourse, it is important to remember that the likelihood of becoming pregnant each month is actually quite low.
As women get older, monthly fertility rates decrease percent chance of pregnancy per month in women , about 1 percent chance per month in women age 42 and older, and ultimately fall to zero.
Because of this decrease in fertility, some treatment options become less successful. The monthly chance of conceiving among couples in which the woman is less than 32 years old is approximately percent. This is why women in their mids should wait no more than six months before seeking care. This illustrates that human reproduction is very inefficient. The female reproductive system produces eggs and protects and nourishes a growing baby until birth.
The male reproductive system produces and deposits sperm. If conception occurs, a baby begins to grow in the uterus. About 85 percent of couples in their 20s through mids will become pregnant in that time. Ovulation and menstruation Every month, usually one egg grows within a structure called the egg follicle a fluid filled sac that nourishes the egg.
Getting pregnant: how does conception happen? Typical pregnancy rates Normal fertility is a pregnancy achieved within 12 months of unprotected intercourse. Fertility and aging As women get older, monthly fertility rates decrease percent chance of pregnancy per month in women , about 1 percent chance per month in women age 42 and older, and ultimately fall to zero.
Click to view a larger image Because of this decrease in fertility, some treatment options become less successful. Timely medical care can maximize your chances of success. Contact TRM online.
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