so me and my boyfriend had sex 3 times recently. all 3 of those days i was ovulating. the first day, my tracker shows only 9% chance of getting pregnant, but he had ejaculated before sex and we had used the pull out method. the next time was at 17% and he had also ejaculated before. last was at 33% but he hadnt ejaculated before. neither of these times had he peed in between. how worried should i be?