[Jocelyn.]

^^^ what Hannah said...

It is extremely unlikely for you to get pregnant without having actual intercourse.

And you can't really rely on symptoms to tell you whether you are pregnant or not. They are too similar to signs that your period is about to start.

Since you are irregular, I'd say if your period is more than a week late then take a test if it'll make you feel better. But don't stress over it, because that just makes your period later.