My cycle started on decenber 16, then on the 15th of january it lasts for 5 days and i have a 30 day cycle i spotted on the 30th of january for a couple hours only when wiped could that have been ovulation spotting???if i had unprotected sex on January 13th,16th,18th, 22nd,27th.30th,and February 3rd could i be pregnant???