So i have two different <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period apps</a> all the same info and two different ovulation days. Whats the chance of be being pregnant on the days marked in my fertile window. My boyfriend and i didnt use protection and he did cum inside of me. Im am also not due for my period until dec 13th. I have had a child before so i am more aware of pregnancy symptoms. But iv had wierd pressure and a pulling/crampy sensation very different from period cramps.