Advice

So first of all, both me and boyfriend are 18, he has a job and I'm still graduating high school online (I slacked off way too much) and am in a kind of trade school for cosmetology. 
About a week and a half ago me and my guy got into it and we (kind of) had sex. He only went in about an inch and a half because I lost my virginity to him and we haven't had sex since then so of course it hurt. He said he precame a little or so he thinks (can guys tell if they precum? Sorry if this is a stupid question). I'm just wondering if I should go ahead and test? I was supposed to start my period yesterday but I didnt, nor do I have any pmsy symptoms. So can someone give me a little advice? Should I test or wait? My mom doesn't even know we've had sex, I'm 18, it's really none of her business anymore but I'm just nervous. I don't think I'm pregnant but?????