My period is late...

Hey girls !! Well I just wanted to say that my period is late by almost two weeks now and I'm really regular. I've been having sex with my boyfriend but he hasn't ejaculated in me...and I know that I can get pregnant anyway but i don't feel any symptoms of pregnancy not even one and I've been thinking is stress but I really don't feel that way either... Do you think I should buy a pregnancy test or just wait for it to come ? Or is it to early to feel pregnancy symptoms ?