Ok good thank you again for your help!
Oh my gosh just hearing that makes me feel a million times better. All I've ever wanted is to be a mom and my husband and I are so excited! Thank you for your help
It sounds like you have enough evidence that you conceived on or around January 17 that you don't have to worry about what happened on January 3. I assume you know that the time period of pregnancy (the figure counted in weeks) begins from a computed first day of the last period, not from the assumed date of conception? The ultrasound looks at the size of the embryo and figures when an average woman would have had her last period begin based on how big the embryo is, and the weeks count starts on that calculated date. It's about two weeks before the baby was actually conceived, but that is how doctors do the count. An "8th"-week ultrasound means a 6th-week conception.
My advice is, get tested for all STDs, and never again in your life drink to the point of blackout. That is a road to all kinds of grief.