Grossesse precoce ?

Hello,
I'm only 14 years old and me and my boyfriend had sex Avont. He did not devierger me, he just punch my hymen. But the last two days, I make dreams where I'm pregnant, I have some stomach pains but nothing very serious. I also had to make my rules this month, but I have not had any bleeding. I'm still waiting for my rules appear. Its been a week now and one day we had sex and I'm worried. What should I do