How long should I wait?

I've had unprotected sex a lot recently, and I am beyond paranoid that I'm pregnant. To ease my mind, I want to take a test. How long should I wait to take it just in case I am pregnant? Before anyone says it, I know it's stupid to not be protected, but I did anyways, but now I realize that I probably shouldn't have. I'm so paranoid right now. I mean, I'd still love a baby if I had one now, but I'm only sixteen, and I still have the rest of my life ahead of me.