I just purchased 1 male and 2 female guppies from the pet shop. They said my guppies aren't pregnant but to me it looks like they are! Can someone tell? And if so what stage are they at? THANKYOU

This is the youtube video of the guppies..

seriously all responses are appreciated! I was driving myself crazy today, 10 pet stores and EVERY female guppy pregnant. Even the ones I thought weren't ended up being