Ask them to compute your estimated due date without considering when the first day of your actual last period was, in short, to use only the ultrasound information to try to give you an estimated due date. It's really the only way an ultrasound will help you at this point. If you're lucky, the baby's measurements and developmental markers will point to a date (not like January 20) that could be associated more with one guy than the other.
My ultra sound is tomorrow this is what they told me my first visit without one
Hi, did you get the "6 weeks 5 days" figure from a doctor looking at an ultrasound? Is that also where you got the due date of October 12?