Don't really know my body like that like didn't get a period for february but when I go to a ovulation calculator they salford the last time I had my period I put down january 1st which was the last time I had it it says fertile days 8-13 and the other one says 11-16. Im 33+5 conception date march 11. But my question is if I did get pregnant on those dates shouldn't my conception date be a lil early than march 11? Im due dec 2.