Whoever it is there are many options, family planning clinic or gp.
Ring the GP and ask them what the best option is, working wise quite ofen family planning clinic.
Whoever goes should be as honest as possible, they've seen and heard it all, and they can work out the best way to help and advise.
NHS Direct (0845 46 47) or FPA (0845 310 1334) could also help as could an organisation such as the Samaritans who will probably have numbers for local clinics etc...
Try this on HIV -
http://www.bbc.co.uk/relationships/sex_and_sex ual_health/stis_hivaids.shtml - copied here...
The HIV test looks for HIV antibodies in the blood. It normally takes three months for antibodies to develop, so if you have a test soon after possible infection, the result may be inaccurate. You'll need to be tested again after three months to get a definite result.
Anyone in the UK can have a free HIV test. The test is available from your GP or from any genitourinary medicine (GUM) clinic. GUM clinics are usually found within a hospital and are completely confidential - your GP won't be informed without your consent. You can also go anonymously. A trained counsellor will explain the test procedure and discuss possible results. You normally have to wait one week for a result.
For further information about HIV try this...http://www.avert.org/help.htm.
Time of sex is no guarantee a girl won't fall pregnant, there are other options such as an emergency coil (copper IUD). Try this...http://www.fpa.org.uk/guide/emergncy/index.htm