my period is pretty late

Well, I wanted share this with you girls because I am going bananas here! I stopped taking birth control just about  3 periods ago (3 months) and my supouse 3rd period should had happened A MONTH AGO, so my period is a month late. I have been always using condom to prevent prengacy and no accidents happened so far. I did 2 pregnancy test both negativo - I didn't do the blood one yet! Hope I am not pregnant!!!
I used to take Yasmin and I know it is stronger than regulars, anyone with similar experiences?!? 😳😐