White egg like specks on toddlers bottom, not shaped like pinworms.

My two year old toddler has white egg like specks on anus… about the size of a large flake of black pepper. They are perfectly round and pinworm medicine is not getting rid of them. I know it’s not her diaper flaking off because I can tell the consistency of the diaper gel vs the opaque round dots. We picked up a poop smear kit to collect a sample to be tested at the lab and I will try & collect it today but I am so scared for my little tot & was wondering if anyone has seen this before. They say pinworm eggs are not seen by the naked eye, only under a microscope… anyone else come across this? :(