period symptoms vs. pregnancy symptoms?

Rebecca
I had unprotected sex. The guy pulled out he 100% did. But I got plan b to be safe bc I am not on birth control anymore. I had sex like a week and a half before my expected period. So I feel like the odds of me being pregnant are slim bc we pulled out and I took plan b (15 hours after) but obviously it's possible. 
(My period is between 27-35 days. It's usually like 27 days one month then the next it's like 34/35. Ever since I stopped my birth control in December that's how it's been.)
I have had like the feeling of getting my period & some discharge and bloat like 2 days after having sex. Also, today almost a week later I've been going to the bathroom A LOT.  I'm not sure if it's my period coming or I'm pregnant. I feel like that's very soon to be feelings symptoms of pregnancy but I don't really know. 
If anyone has any experience with this as well please let me know or any advice. 
I haven't taken a pregnancy test bc I technically didn't miss my period yet I'm expecting it in a few days. And I wasn't sure if it was too early for a test bc it hasn't been a week yet.