chances ?

Kourtnie • 18 years old 👑 expecting my 1st in October 2017 🤰💕
Since Thursday I've been getting what feel like period cramps, all throughout the day, sometimes they are really sharp but they're a little higher and more to the left side of my abdomen kind of by my hip bone, which is weird. I'm due for my period the 23rd, today. Usually I only cramp the day right before I start & I have to poop a lot, and cramps the first day then after that I don't have cramps. Well I'm constipated & ive been cramping for days. Yes, I have had unprotected sex, & stupid me, it was during my fertile period, with my ex boyfriend who I was with for two years & we just ended the 3rd of this month. Chances of being pregnant seem high????? 
Update: period hasn't started