Hey you guys , I'm 21 and my fiance 28 ; and we're TTC but the thing is . I don't know when I ovulate. I had my period september 1 , 2015 and ended September 9, 2015 and i have a 30 day cycle. And we had sex on September 12 , 2015 and september 26 , 2015. What are my chances of becoming pregnant?