My period is two days late!

I'm 17 and have sex with my boyfriend quite a lot but we always use protection (condoms) and he doesn't always cum if he does he checks the condom to make sure it isn't broken or anything. I normally have irregular periods but I'm not usually late for it so I'm getting kinda nervous. I'm trying not to stress because I know it won't make things better so I'm just patiently waiting for it. If I don't get it by tomorrow I'll get a pregnancy test