My last period was 18 April. I had sex 25 April with one guy and then slept with my ex the 28,29,30 April and the 4,5,6 and 7 of may. I'm 30 weeks pregnant which on conception calculators states that I approximately conceived 10 may. But it says my period started the 26 April. Does this mean I ovulated late and the baby daddy is the ex and not the one night stand on the 25 April ??? 😩😩😩