I might be, right?

So I had unprotected sex on the last day of my "fertile window" and he cummed into me (it was at 8%) and nothing came out after. Not long after that, I somewhat felt I was pregnant, if we can say so... Right now I'm having cramps (which I thought were menstrual but aren't...?), my boobs grew A LOT, even my boyfriend noticed it, I have had headaches, dizziness and I got really tired (I sleep for no reason, I had a mononucleosis 1 1/2 months ago though so it might be that). I also got mad for no reason so I thought it was PMS but I checked pregnancy symptoms and it could be it...

I'm 3 days late on Glow and 5 on another app.

If I don't get my period on Sunday, I'll test Monday morning. I'm still in denial (until I see a positive test). I'm on Day 34 of my cycle, my longest ever was 35 days.

What do you think?

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EDIT

I'm not pregnant (it's good news considering I didn't want to be)