17 and late

Hey girls, I'm in a new position here! I've been told I was pregnant before but had a miscarriage at like 4 weeks I believe but still kind of don't believe it. But anyways, my period is four days late. I'm not stressed or anything but I do have sex daily and a lot! With condoms and without but he does not do his business inside of me. Do I take a test yet? I'm 17 newly, my hormones go crazy!! But I'm rarely late and I've never been this late!! I'm not freaking out but I would like some help/ advice!