6-7 week Twin Ultrasounds?

Ra

Just had my first appointment and US. There was one gestational sac and two amniotic sacs and not any visible fetal poles but my doctor couldn’t be sure. Could be twins, or a singleton with a yolk sac but my dates are off (they’re not) or just entirely non viable. Needless to say we’re a bit in shock - twins don’t run in our families at all. Would love to see anyone’s ultrasound photos of twins at 6-7 weeks just compare to what we saw! Thank you!