Missed Period

Has anyone here missed a period just like that? No symptoms no nothing?

I'm 22 and I have been having my period since I was 14 and I have never ever missed a period before. But this month I have 0 symptoms and 6 days late today... It's just weird.

P.s.: This month I did have sex and we used condoms, which I'm pretty sure did their job, but I will still test tomorrow.