In the early follicular phase, all antral follicles should be small; by the ovulatory phase, a dominant follicle will be visible alongside smaller ones.

“based on when you check in the cycle so if you're looking in that early follicular phase when somebody's on their period they're they all should be small because nothing's been stimulated if I'm looking per ulatory I'll see that dominant follicle that's about to ovulate and then everything else will be small”