Hello, I will tell you my experience: I am currently almost 10 weeks pregnant. On my last pregnancy and this one I opted to have a private ultrasound to listen to the heartbeat. With my daughter I was 6w2d when we heard her heartbeat.
With the one I am currently carrying I had gone in for some lab work at around 5 weeks. It did not double the way it was supposed to after 48 hours (although the HcG was over 6k) so they scheduled me for an early ultrasound. When I went in for the u/s my doctor estimated me at exactly 6 weeks, and all we could see was the sac and yolk. My doctor *thought* she saw a fetal pole, but was unsure. She was unconcerned about my HcG levels. She said they actually look for a 66% increase. She was more interested in my progesterone levels, and since my progesterone was beyond the limit for first trimester (>60) she was not worried overall, but she did tell me to be "cautiously optimistic".
So she scheduled me for another ultrasound at 8 weeks, which would have been 3 weeks later. Yeah, there is no way in hell I would have been able to wait that long. So I scheduled for a private U/S, which cost about $75 (Ohio). We were able to see the fetal pole, and I was estimated as 7w1d by then.
At 8 weeks u/s with my doctor the fetal pole was 179 bpm.
Now I am playing the waiting game again, for my next appt which will be at 12 weeks. My anxiety is through the roof. I try to keep busy, and realize that if something does happen, there really is nothing I can do about it. But I think everyday on whether or not I should buy my own heart doppler. So far I have not bought one (and my doctor discourages them) but I consider it every. Single. Day.
If you are interested you can do a google search for private ultrasounds in your city. They usually have a package where you can listen to the heartbeat. I have already decided if they are unable to tell us the gender at my 12 week NT scan then I will probably go in for a private one again. We are pretty excited to know the gender.