hi I should be 8 weeks pregnant from my last period dates, two weeks ago I went for a scan and there was only a sac, today I went for another one and there was now a yolk sac but couldn't see a baby. I know my dates could be of but shouldn't we be seeing a baby by now? how many  days after the yolk sac comes does the baby
Baby's heart is seen by 6 weeks. Gestational sac and yolk sac are seen prior to that by around 1 week.Wait for 15 days and than get your ultrasound done to see for baby's heart.Even if you are sure wait for 15 days to repeat the scan and see.