help!!

so i had protected sex the day after my period ended. My fertile days started ab 4 days after that. it’s now 4dpo and i’m a little bloated and my uterus feels like it’s growling and my stomach is too even after i eat. My period is supposed to start in 9 days i just wanted to know if stress and anxiety can cause it to come late bc i’m freaking out ab this. Please help