7 weeks pregnant for ultrasound may need to hold enough urine, or may not need to hold urine, how much urine and do abdominal ultrasound or vaginal ultrasound related. 1. Abdominal ultrasound: 7 weeks pregnant to do abdominal ultrasound, pregnant women need to hold urine until the lower abdomen has a feeling of bloating, the desire to urinate, full bladder is more conducive to the probe scanning the uterus, as well as the uterine cavity of the gestational sacs, buds and other conditions. 2. Vaginal ultrasound: 7 weeks pregnant to do vaginal ultrasound pregnant women do not need to hold their urine, transvaginal ultrasound does not require a full bladder, the distance from the pelvic organs close, so do not need to hold their urine. It is recommended that pregnancy should be according to the doctor’s instructions for regular obstetric examination, in order to timely detection of problems, while pregnant women should pay attention to maintain a good mood, relaxed mood, maintain good work and rest habits, and under the guidance of the doctor to do further examination.