Should I have something to worry about

Last time I had sex was probably 30th and it was unprotected sex but he pulled out. ( yes ik the pull out method doesn’t work and that you should always wear a condom but that didn’t happen so don’t drag me for it. It won’t happen again )

anyways he said he didn’t finish in me which I believe or I’m sure I would of felt it but my period was supposed to start on the 1st and it hasn’t.

This app isn’t good with tracking my periods so it usually starts when it says my period is going to end which is the 6th.

Should I be worried? I don’t feel weird or anything ( and I’m getting on BC soon )