pregnant or not?

Tyler
So I have been on the Nuva ring for 5 years. I put it in on Monday 8/15 after having my period then had unprotected sex Thursday 8/18. Not supposed to take out the Nuva ring for 2 more weeks. Could I be pregnant???  I don't have any side effects and I feel fine. He said he didn't cum. We also had sex Friday morning.