My period is a week late, could that mean I'm pregnant?

Hi

um, i'm a week late for my period and im starting to get worried that i might be pregnant. My boyfriend and I use condoms all the time and none have ever broken. am i just being paranoid? i have no symptoms of pregnancy (swollen/tender breasts, no mood swings, etc.). But i'm still worried, if you could give me some advice that'd be great.

thanks.