I am trying to be optimistic, I really am... but that you ladies are all seeing heartbeats even before 6 weeks, and at 6+0 I didn't see one... I'm so nervous/worried! Even though everyone is telling me it's normal and that at 8 weeks I will see it on the u/s, I can't help but worry. I have no spotting or anything though, and my yolk sac was shaped exactly round and my gestational sac measured properly... Anyone have any advice?
I can only imagine your frustration right now & I'm sure the best reassurance is finally seeing that heartbeat! But I did find an article for you! I hope it helps!
"Week 6 Gestational Age (Fetal Age 4 Weeks)
5 ½ to 6 ½ weeks is usually a very good time to detect either a fetal pole or even a fetal heart beat by vaginal ultrasound. The fetal pole is the first visible sign of a developing embryo. This pole structure actually has some curve to it with the embryos head at one end and what looks like a tail at the other end. The fetal pole now allows for crown to rump measurements (CRL) to be taken, so that pregnancy dating can be a bit more accurate. The fetal pole may be seen at a crown-rump length (CRL) of 2-4mm, and the heartbeat may be seen as a regular flutter when the CRL has reached 5mm.
If a vaginal ultrasound is done and no fetal pole or cardiac activity is seen, another ultrasound scan should be done in 3-7 days. Due to the fact that pregnancy dating can be wrong, it would be much too early at this point to make a clear diagnosis on the outcome of the pregnancy."
From: https://americanpregnancy.org/pregnancycomplications/earlyfetaldevelopment.htm
They did see a fetal pole, correct? and the doctor said your developmental size was fine? Could it be that your dates are off & maybe your closer to 5.5 weeks? Just keep in mind that everyone develops differently & there could have also been something obstructing the ultrasound from picking up the heartbeat- technology isn't 100% reliable!