Pregnancy tests usually involve testing a sample of your urine to see if it contains any pregnancy hormones.
You can have a free test done at a young peoples clinic, a Brook Advisory Centre, most family planning clinics and some sexual health clinics. Why don't you find clinics in your area.
If you don’t mind paying for a test you can ask a chemist or pharmacy to do one for you.
Alternatively you can buy a kit to use at home. These tests are handy as they let you find out your test result in private.
If you are worried about the result you might find it better to have your test done at a clinic because there will be someone to talk to.
If you are pregnant visit the I'm pregnant section for your options.