Today I had a u/s and it showed 6wks2days calculating my LMP however measured embryo and tech said it was at 5wks3days my question is would that make me 3wks3days I'm confused they seen a heart beat but could not hear it. Would I conceived 3wks3days ago or how would that be calculated. What can be the earliest(weeks) to see heartbeat and the earliest to hear the heartbeat? Can somebody help me find out more likely the conception date?

The earlier the US the more accurate. Seeing a different of one week between both dates is not uncommon... alot of times they give or take 2 weeks. So you are between 5w3d and 6w2d pregnant. I heard my baby's heartbeat for the first time around 10 weeks with my first, and 9 with my second.

Yeah the top answer is right midwives and US are never the same always 2 weeks diff but the US is always right so yeah 5wks / 6wks pregnant

Babwgreen... just to let you know... Ultrasounds are not "always right". There is a margin of error with them. All they are is an educated guess.

yeh the top answer is right midwifes and US are never the same always 2 weeks diff but the US is always right so yeh 5wks / 6wks pregnant

Ulrasounds are not always right. Especially if you see mulitiple doctors and or have multiple ultrasound tecs. If they were "always right" there wouldn't be mothers who expect to have a little girl and have a boy or vis versa.
I would also say 5wks/ 6wks. Also remember who they determine the genstation of your baby is by measuring and some parts of the baby may grow faster witch would give you different gestational ages. For an example my daughters head was about the size of a baby at 24 weeks and I was only 20 weeks, but the rest her body was around 21 weeks. Every baby is different and may very. And you may be able to hear the baby's heart beat as soon as 6 weeks, and roughly 5 1/2 weeks to see the heart beat.
Congrads and I wish you the best of luck and hope you have a healthy and good pregnancy and enjoy the sleep while you can the sleepless nights start before the baby comes:)

Ditto above.. you can hear the heartbeat at aprox. 6 weeks.

We just saw our baby's HB at 7w, 3d.

As your baby continues to grow, it will become easier to determine when he/she may be due.