But I would call your RE and find out what they meant. In my case when using my own eggs, they only counted the larger follicles they thought would contain mature eggs or had a chance of containing mature eggs.
That seems a little odd to me. When I went through my own IVF (before my DE IVF), they measured every single little follicle and measured each of them daily. They did guess that those under, I believe it was 10, were unlikely to be mature enough to produce an egg at retrieval.
With my donor cycle, my donor had at least 45+ follicles, 27 of which had eggs, 24 of which actually fertilized on day 1.
Maybe they are just giving you the estimate of which follicles they believe are mature enough to fertilize??