I really don't know when I ovulated but, the charts say from 07/06/2015-07/08/2015 I had unprotected sex and no pulling out on 06/04/2015. Is it a big possibility that I am pregnant, or does that still give me a 50-50 chance. The thing is I believe my period average is 27-28 day, well on 07/09/2015 I had the worst period cramps but with not period. The cramps lasted all day finally eased up as the day ended, and not only cramps but throbbing on both ovaries. The thing is I do just hurt a tiny bit on my ovaries, when I guess I'm ovulating. But these were so bad I wanted to curl up. What does anyone think it is? Could it possible mean pregnancy?