I think im pregnant

Last time i had sex i got a period i had PMS it was a normal period it lasted 7 days as usual but now this month i haven’t got mine Even if it SHOULD’ve come these days.. it’s irregular So usually it comes after 3 weeks and some days and now ITS Been a month. I have Sore breasts and my ovaries hurt(usually They dont) for over a week.. but No period At all.

Is it a chance im pregnant?

Why haven’t I got my period?

I haven’t had sex since last time i’ve got my period!!! So is it a chance?