If you're planning pregnancy

If you are trying to become pregnant you should take a 400-microgram supplement of folic acid every day while you are trying and up until the 12th week of pregnancy. You should give up smoking, reduce your consumption of alcohol and not take any drugs without talking to your doctor first.

Get information and advice on your options from your doctor, family planning clinic or from Brook (for under 25s only) on 0800 0185023, British Pregnancy Advisory Service on 08457 304030, Marie Stopes Clinics on 0845 300 8090 or your local young people's services.

For more information on sexual health (including HIV), call the Sexual Health Line free (from the UK) on 0800 567 123, textphone (for people with hearing impairments) 0800 521 361 or phone your local NHS sexual health clinic.