We did transvaginal ultrasound 2 days back under doctor advice,  and in the report it was mentioned as below 1. Gestational sac seen in upper endometrial cavity towards right, eccentrically placed gestational sac . It is seen to be embedded in endometrial cavity . 2. Gestational sac measured 7.6mm 3. Yolk sac and fetal pole seen 4. Fetal biometry CRL - 1.7mm (6W 1D) mediscan. 5. Cardiac activity not seen at present . 6. Approximate gestational age 5 to 6 weeks . Need to assess cardiac activity after 2 weeks . My query is , is this abnormal if cardiac activity is not present at 6weeks 1 day .? Pls advice. This is first pregnancy.