The GHM-ONE is based on a powerful processor which, in combination with a relay card and mains adapter card, serves as the base unit. The base unit can be adapted to applications with a communications card and up to two I/O cards. The number of physical inputs and outputs can be expanded with external I/Oâs. This modular layout enables
Some practitioners routinely recommend an ultrasound at 6 to 9 weeks to confirm and date the pregnancy, but others will only do one if they have reason to suspect any of the following:
When to get an ultrasound. Many practitioners recommend an ultrasound at six to nine weeks. However, others will only do an ultrasound during the first trimester if miscarriage or ectopic pregnancy are suspected. If you have any abnormal bleeding, aren't sure of the date of your last period or had fertility treatments, your doctor will also order a ultrasound around the second month of pregnancy.