Yolk sac but no fetal pole on ultrasound 😞

Catherine
Hi all
I've just got back from an early ultrasound (transvaginal) and they saw the yolk sac but no fetal pole. By lmp I should be 6w2d but only measuring 5w3d (which I guess could be right). I'm booked in for a rescan on 2 weeks time to see if the fetal pole develops as it could just be too early.
This is my 4th pregnancy, 2 MC and 1 ectopic so far so as you can guess, I'm not hopeful that this one will go any better.😞
Anyone been through the same? And if so, what was the outcome? 
Xxx