Hi, I wanted to know if there was a possibility if I could be pregnant. The first day of my last period was June 2, 2011, so I believe I ovulated on June 18, 2011. I had sex that day and we used the "pull out method". As of about Friday, I have been feeling mild cramping, back aches, abnormal gas, and slight headaches. Also, I have been urinating more often than normal.