Pregnant or not??

Millie • 15 year old :)

So I had sex around a month ago on June 6 I didn’t use protection but I’m pretty sure he didn’t nut in me anyways my period was supposed to come around June 30- july 4 Nd it still hasn’t came I’m 4 days late already. I’m gonna get a pregnancy test soon but for rn is there any other reason my period is late?