i am pregnant and my due date is may 22nd. i found out i was pregnant on september 22nd and the doctor said i was 5 weeks and 3 days. I had an ultrasound when i was 8 weeks pregnant. The ultrasound said i was 2 days more pregnant than i originally thought but my due date was keep the same. i cheated on my partner on september 10th with another man. Could the other man fathered my baby?