More than one in 10 people (11%) do not realise a woman can get pregnant if she has sex standing up, according to a new poll.
The Department of Health and the Department for Children, Schools and Families commissioned the survey to highlight misconceptions around safe sex.
It found 19% were unaware a woman can get pregnant while she is on her period.
Meanwhile, the same number were unaware she can get pregnant if the man withdraws before ejaculation. The survey of 2,000 people aged 16 to 50 found 26% never discuss contraception and almost one in three (31%) never talk about sexual health — such as sexually-transmitted infections — with their partner.
A total of 17% are unaware that some infections, such as herpes and genital warts, cannot be cleared up with antibiotics.
“In spite of our love of talking about sex and relationships, the survey suggests it's our lack of knowledge that is causing confusion,” sex and relationships expert Dr Pam Spurr said.