I was wondering what results I would get with an ovulation test if I am actually already pregnant? For example, the first day of my last period was March 4th. I had unprotected sex on March 10th and I have been testing for ovulation since March 13th and have not gotten a positive result as of today. I read on line that if you are actually pregnant you can get an inaccurate result. Based on my previous pregnancies, I usually get pregnant around 13 days after the first day of my last period, but I know you can get pregnant at other times in the month.