Too preoccupied...help!

I'm so preoccupied. I'm 16, me and my boyfriend had no-protect sex the 3rd june (my major risk day) but for a little time.

My avg cycle days now are 34.

I've never been regular, my avg cryle days go from 30/33 to 38. He said that he isn't cum into me, and I belive in he..but I'm preoccupied anyway. I still not have any classic or particular symptom of pregnancy.

Please, make me stop to think about it...