It already has six (6) weeks, my wife in pregnancy and yesterday we went back to the doctor to do the regular check up.
It is learn that, by this week, we will be able to see the baby (embryo) quite clear. I can even see very little and tiny white dot beating (as you can see from the photo, very small white dot). Doctor tried to detect the heart beats by using the ultrasound machine and it is quite weak but can be detected.