Pregnancys first trimester is often when the early obstetrical ultrasound is performed (under 14 weeks). It will be utilised to look for an embryo in the uterus because they can generally see one with a heartbeat at six weeks of gestation. It is recommended to perform the imaging for this evaluation seven weeks or later. The early obstetrical ultrasound may be requested to confirm the size of the embryo or to date your pregnancy. Additionally, it may be required to assess your ovaries and treat vaginal bleeding or pelvic pain.