I am 29 year old, this is my 2nd pregnancy I am right now 8 weeks 4 days and did early ob scan. I want to understand the readings in my report. Able to see fetal pole, yolk sac, gestational sac with single intrauterine and crl is 19. 7 mm and fetal heart rate is 175 bpm and cervix length is 3.4 cm.

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