We do everything to stay safe but period is late please help

So my last period was January 30th and and it ended February 4th. We had sex on the 5th and whenever we have sex we always use a condom, he never comes inside me and we check the condom. We did all three that day. We didn’t have any sex on my fertile or ovulation days. We had sex on Tuesday morning on the 19th. We did the same thing we always do. Condom, pullout and condom check. We do this all the time when we have sex because we both don’t want kids yet. But my period was supposed to start Wednesday and I’m seriously freaking out because we do everything to prevent what could possibly happen. I am in college and I am under a lot of stress. I feel it could be that and I try to stay relaxed but I’m so scared. We always have safe sex and I’m still so nervous.