@ leesha that is true, but I'm just letting you know that your statement about not being able to hear the heartbeat at 8 weeks is not true. All women are different and babies at that but to say you can not hear it at 8 months isn't true. I just didn't want anyone reading that thinking that they won't hear a heart beat till 14 weeks. This is why doctors and midwives give us a range.
From my personal experience, I heard my daughter's heartbeat via ultrasound at 6 weeks. I also have a retroverted uterus, which was also confirmed on the ultrasound. I could not hear her heartbeat with the doppler until 16 weeks due to the retroverted uterus, but it was audibly detected by the ultrasound ten weeks prior. Her heartbeat at 6 weeks was 124.
Anyways, are you sure what you had was implantation bleeding? It really sounds like it could just be that your dates are off and you aren't as far along as you think you are. This happened to my sister in law. She had an 'off' period, and assumed that she had gotten pregnant then, when in reality she was an entire month behind because she mistook that period for implantation bleeding. I would wait a week or two and have a repeat ultrasound and see what they say. In two weeks time you should definitely be able to see a difference in growth.
It also depends on HOW they're attempting to find the HB--if it's with a Doppler, you'll likely not hear it till much later. We couldn't hear my daughters till I was 16 weeks. With an internal ultrasound it is possible to hear it as early as 6 weeks. It just depends on a lot of things.
Overall HEARING the heartbeat is NOT important. It's far more important to SEE the heartbeat.
i would suggest some blood tests to check your levels..
the dr at ultrasound should have measured your baby if they were concerned about heart beat and age. age and size of a baby has a huge impact on what should be there and what shouldnt. Every women and there baby is different in things happening at different times but if you bleed in oct i would say you are only a few weeks preg which is to early to hear and most of the time to see a heart beat
I understand what they say in New Zealand but that is not correct this is my third pregnancy my other two I heard heart beats at 8 weeks very strong and clear. I sure that article says 14 weeks but that is not correct. I have many other friends that heard around or before that time also. 8 weeks is normally when they check those in the United States.