Don‘t know what a word means?
Then use our glossary to find out!
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Oestrogen
One of the female hormones that controls reproduction.
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One Night Stand
When you have sex with someone but don't go on to have a relationship with them.
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Oral Sex
Using the mouth and tongue to pleasure and stimulate a boy's penis or a woman's vagina. There are contraceptives available to avoid catching STIs through oral sex, such as Dental Dams and condoms.
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Orgasm
The peak of sexual pleasure, orgasms are different for everyone and not everyone has an orgasm every time they have sex.
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Ovaries
Ovaries are the female reproductive glands. They hold and develop eggs and make hormones called oestrogen and progesterone.
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Ovulation
When a girl's ovaries produce eggs. This usually happens halfway through the menstruation cycle. For instance, if someone has a 28-day cycle from the first day of their period to the next, ovulation will be around day 14.
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