Am I pregnant?

Go to your GP or pharmacy. There is such a thing as the morning-after pill. I don’t know exactly how long it works or when you should take it—I’ve never had to use it myself, I just know it exists.
If you don’t do that, you’ll always have the chance of being pregnant and will have to wait until you get your period.
Do you know how long your cycle normally lasts? Then you’ll know if you’re in your fertile window...