Blame a lack of sex education from school or parents who were too embarrassed to discuss the birds and the bees - but it seems that not everyone knows how babies are made.

Crucially, the fact that men and women don't even need to have intercourse to conceive is often overlooked.

FEMAIL asked doctors to reveal the truth and bust the myths around conception, including that breastfeeding protects new mothers from getting pregnant and that you always need penetration to occur...

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You can pregnant with your clothes on: Health experts say that you can get pregnant from dry humping, even if there is no penetration

One fact that may be most worrying to frisky teens is that you don't even necessarily need to remove all your clothes to conceive.

According to experts, women can get pregnant from 'dry humping', when a man and woman grind against each other without penetration, even if they're wearing underwear.

'If semen came into contact with your vagina then there is a risk of pregnancy,' Family Planning NSW explains. Semen can even soak through underwear and you can, although it is rare, get pregnant from that too.

Another common misconception is that breastfeeding can act as a natural contraceptive and prevent pregnancy, but there is no evidence that this is the case.

Although breastfeeding up to six months after birth can decrease the chances of conceiving, it's by no means 100 per cent effective.

Careful: If any ejaculate gets on or near the vagina, including on underwear, there is a small possibility you could get pregnant

And then there's the 'pull out' method. Some people believe that if a man does not ejaculate, it's impossible to get pregnant, but this is untrue.

'Pregnancy can happen even if the penis is pulled out before ejaculation as the small amount of semen in pre-ejaculation fluid can come into contact with the vagina,' NSW Heath explains.

Another way people try and prevent pregnancy, but often fail, is by using the rhythm method.

The rhythm, or calendar method, consists of couples abstaining from sex when the woman is in the 'fertile' part of her cycle where she is more likely to get pregnant.

However women can get pregnant at any time during their monthly cycle, including during their period.