However, a gestational sac can be identified on transvaginal ultrasound as early as 4.5-5 weeks gestation and a yolk sac is visible on ultrasound by as early as 5 weeks. A fetal pole with heart ...

Home pregnancy tests can detect HCG around 12 to 14 days after conception, when you're around 4 weeks pregnant – or about the time your period is due. ­ (The most common way to calculate your ...