Sexual intercourse and periods

My boyfriend and I had sex for the first time about a bit over a week ago (with a condom), it only hurt a little. But now im about a week overdue for my period,.is it normal to have a delay on your period afta your first time?? Does intercourse influence timing of periods at all??

A period could delay if your under a lot of stress...

IF he used a condom 100% of the time, you aren't pregnant. (100% means that he didn't just slide in a 'little bit' before the condom. Because a man's pre-c*m has some sperm in it.)
Stress can delay a period. (Like freaking out because you just had sex for the first time.)
And, with some women, intercourse can cause some bleeding which is often viewed as a period.