Pregnancy Mind tricks??

alright! sigh here we go..

So about 2-3 weeks ago i had protected sex. And it was one day before my fertile window began. But it didn’t last because something had happened and i began to have an anxiety attack so it ended early. I’m almost 100% positive he wore a condom (BECAUSE I SAW IT AFTER HE TOOK IT OFF) and he didn’t cum. (because i had my meltdown) but for some reason i keep thinking that i’m pregnant! my period is due today and so far nothing! no cramps , bloating, nothing! Usually i have these tiny little cramp feelings right before my period starts and i’ve barely had that at all. and the thing is i’m so sure no sperm got into me but it’s almost like my mind is playing tricks on me! i don’t want to keep stressing because that will just delay my period more and i’ll be even more stressed. I don’t want to buy a pregnancy test because part of me knows that i’m not pregnant but for some reason my mind keeps making me think that i am!

has anyone else had something like this?? any advice??