I am 18 years old and am irregular. I had sex for the first time August 3rd (not ovulating) and he didn’t cum inside of me but I was supposed to get my period on the 11th according to my usual calendar but since I’m FREAKING OUT, I downloaded this one and it’s telling me I’m 6 days late!!!!!!! I’m cramping and breaking out which is always an indication that I’m about to start but I haven’t and I’m just so scared. What do I do???!!!!!!!!