If you think you need to consider emergency contraception then the sooner you act on this the more options you will have but most importantly this choice will be most effective.
Please see the following link to review the options and if you need to consider this.
https://www.nhs.uk/conditions/contraception/emergency-contraception/
In hours you can talk to a doctor regarding this, out of hours to avoid delay you are best to contact the pharmacy teams – you can look online to see the nearest pharmacy that can issue emergency contraception (please be aware not all pharmacies are able to do this.)