2PB on Day 1 instead of 2PN — should I be concerned?

Hi everyone, I’m looking for some insight. I recently went through IVF, and on day 1 after fertilization, my clinic reported seeing two polar bodies (2PB).

I’m a bit confused because I thought the expected finding would be two pronuclei (2PN) at this stage. Does the presence of 2PB instead of 2PN mean the embryo is unlikely to develop properly? Or could this just be a timing/observation issue?

Has anyone had a similar situation and still had normal embryo development?