so nervous

So usually I get period cramps 3 or 4 days before my period. But I noticed something off about my normal cycle I have 6 days before my period and I'm already cramping and SUUUUPPPPEEERRRR irritable I did have sex but I was careful at least I thought I was 😬 I'm really hoping it's just my period about to start. Is it possible that it's just my period is off because I've been so stressed lately