Period with no ovulation?

Taylor
I went to see my OB back in March to have my blood levels and hormones tested.... she did it while I was on my period. (3days unto my period) and she said I wasn't ovulating which is why I have not been able to get pregnant. .. but my question is.... don't you have to ovulate in order to even have a period? Because that's what a period is... an egg that hasn't been conceived.? It's so Confusing to me.