baby can die, the cource of heart beat has stopped. this is not your falt.
You could see a heartbeat if they do a transvaginal ultrasound.
my ultrasound said that my last period was nov25 could it be right
You really need to talk to your doctor or the person who did the ultrasound about this.
I understand what you are saying when you say messuring, they messure the sac and it calculates what the size is to get the age of the sac/fetus.
Yes
Subtract fourteen weeks (7 days x 14) from the date of the ultrasound.
You could but keep in mind that it could also very much change depending on how the baby is measuring at the midway ultrasound. Even then the due dates are just estimates!
An ultrasound at 6 weeks should show a fetal heartbeat, if there was a fetal heartbeat you're not miscarrying.. It's probable you estimated your due date wrong.
An obstetrical ultrasound can be as much as 1-2 weeks off, before or after the due date.
The sex of your baby can be determined by ultrasound at 16 weeks. Doctors will usually do an ultrasound at 20 weeks.
If you do not remember the date of your last period you can have an ultrasound to determine your due date. More than one ultrasound throughout your pregnancy may be required because ultrasounds are not always accurate. They could be out as little as a couple of days by a matter of weeks.
Around 2.5 weeks ago.