Well there's always a chance if you don't use protection but your chances are slight. Its even possible to get pregnant while your period is on. These things are rare but can still happen. Unless you start having symptoms or miss a period then I wouldn't worry too much. But unless you wanna be pregnant I suggest your b/f raps up his riser lol I heard that on a show but im serious. Good luck!!

As she said. It is possibly. Unlikely, but possible. Wait until your next peroid is due, and see.