confused. don't know what to do. maybe I'm overreacting and over thinking

So very confused. We didn't have sex. He fingered me. He never touched me after he came. There shouldn't be any way that I could ever be pregnant. But I have this awful feeling about it all like I am. I don't know why. Am I going crazy??? I'm not ready to be a mother. πŸ™πŸ™πŸ™πŸ™ Β I haven't started my period yet. It's supposed to come sometime this week. This has been a total nightmare. I tried talking to the guy, not telling him what I thought. But asking if maybe he did finger me with cum on his finger. He got mad and now thinks I'm crazy. I don't know what to do.