What are the chances of pregnancy after the ovulation period is it really only 5%?

Hard to say: The rate of pregnancy per month is about 10-15. %. If timing the ovulation, and i assume you mean just after ovulation, it mat be higher. It's new to humanity to time ovulation, i would be considering the 15% range. If way after ovulation, theoritcally it is low; human error is high, however, thus 50% of pregnancies in the us are unplanned. Good luck.