You could of ovulated later or earlier than expected, the only way to be for sure on who the father is. Is to have a dna test done when baby is born.
The ultrasound is probably a k 're reliable source. I went to the doctor at about 7 weeks and then went back 9 weeks later and the doctor said by the size of my uterus I was at 9 weeks which I knew wasn't possible the ultra sound I had done later that day showed I was 16 weeks
It's Ok , I Had The Same Problem . Me && My Child's Father Broke Up For A Couple Of Months && When We Got Back Together I Found Out I Was Pregnant After A Couple Of Weeks .. Don't Freak Out The Doctors Add A Couple Of Weeks To Your Pregnancy Because They Can't Determine The EXACT Time That You've Conceived . But Honestly The Only Way You Could Really Find Out Who The Father Is , Is If You Do A DNA Test .
But how does that explain my actual ob thinking I am further because of the heart beat and tummy size (by the way I am small I never gain weight with my baby's other Than Tummy and breasts (this is my second)) and him being completely wrong according to my ultra sound
The ultra sound gave the exact date I was with my ex wich is what I am scared of. We had sex on 4th of July and I didn't have my period but I start my period on the 10-12th would I have had some spotting or a light period if I got pregnant that close to it
Not Really , I Had Sex Close To My Period && I Had Absolutely No Spotting Except For When The Egg Was Implanting && That Wasn't Even Noticeable .
Go by the ultrasound and whatever gestational age they give the baby at that scan go back that much on the calendar from the date of the scan then go forward 2 weeks and that would be approximate date of conception.