My last period was Nov. 8th, but I know I got pregnant a week or two after. But according to my last period my due date is Aug 15th.
Every one ovulates at different times in their cycle.
My last period was nov 20 and I'm due 8/27. Some people ovulate early or late which matters more than last period.
Perhaps she had implantation bleeding?
I'm 30 wks nd my last period started November 15 i actually got pregnant on my period. Nd yes it's possible to get pregnant on your period it's kinda rare but apparently it happens.