The boxy yet stylish Nissan cubeÂ® makes its North American debut with its non-traditional asymmetrical body. 1  Engine Type. 2  Engine Displacement. 3  Engine Max. 4  Transmission Type.
Posted: Feb-13 08:28 PM (9 of 10) A dating ultrasound is most accurate, and should actually be done, by 9 weeks at the latest. At that early stage the baby grows almost exactly to the day, and conception can be basically pinpointed. After that, by 12 weeks it's not very accurate.
I am sorry to say that no seeing a heartbeat on ultrasound at 12 weeks means that the baby stopped developing and the pregnancy is not viable. You can choose to wait for your body to miscarry naturally or to have a D&E. Most miscarriages are caused by chromosomal abnormalities in the baby and not by anything you did.