scared I’m pregnant..

so me and my boyfriend had sex with a condom and It was perfect use.. no tears or rips and we took it off fine but I can’t shake my anxiety about being pregnant. We had sex on July 2nd and my period is supposed to come on July 23rd but my last period came a lot earlier than last time so I’m not sure when this one will come. I’m just so anxious and scared. is it likely I’m pregnant? I feel like any little feeling I’m having means I’m pregnant and I’m worrying myself sick.