It is said that you can get a positive HPT two weeks after conception....Mine showed that early, and I was only carrying a singleton..lol good luck
They count pregnancy from the first day of your last period. So when you are 6w5ds by ultrasound you've really only been pregnant 4w5ds. And yes they can determine twins that early.
Also if you are having a big baby then it would be a little off. My doc told me my due date was June 18 but the ultrasound said the 11th but I just found out it was a boy and all my boys have been big so good luck.
First trimester ultrasounds are EXTREMELY accurate the first trimester since all babies during that time develop at the same rate. After 13 weeks is when they no longer determine gestational age based on measurements because the baby then develops at its own rate.
Yes its possible. Conception for me was Oct 11th and I had a positive on Oct 23rd.
I did IUI but still, I got my +hpt only 10 days later. Definitely possible to get an accurate result that early, just doesn't happen for everyone! Congrats :)
ITs possible, and no it doesnt have to be twins. They definatly wouldve identified two sacs.