MIA periods

When you're under a lot of stress does anyone else's period just go MIA? My period has be extremely regular for about 6 months now but now I'm overly stressing about getting the house ready and everything for the wedding which is in a couple of weeks. So, im 3 days late now but I'm cramping like crazy. And I know I shouldn't but now I'm stressing about stress causing me to not have my period. Lol. And I know I'm not pregnant because my fiancé and I haven't had sex since January for personal reasons.