Okay so I need to know if I’m pregnant or get some opinions

So, I had breakup sex, yes I know. Bad idea but I can’t go back. And I’m on birth control, but we didn’t use protection. It’s been a month since it happened and my period was supposed to start yesterday but hasn’t started yet. I took all my pills on time so I should be okay in that department. Yesterday I took a pregnancy test and it was negative. I took two more today and they were both also negative. What do you think?

Things to note:

1. I’ve been stressed lately due to my fuck*ng crazy ex.

2. I just started the pill 4 months ago and my body might still be getting used to it.

3. And before I started the pill I was on 36 day cycles so this 28 day cycle thing might make my period weird, but idk I’m not a doctor.

Feel free to leave comments please! Help a girl out!