That's a fucking legit question. But the answer has to be Google, or extensive past interaction with roaches, lol.
I've seen plenty of roaches in my life, babies too, but never fucking eggs. And I'm an insect fanatic. I love them. I raise ants and even wasp queens periodically. I handle anything, don't kill spiders, etc. I do not know what a roach egg looks like. I could guess it was an insect egg, but what species isn't super obvious unless you REALLY know them.
edit: Don't love the infesting roaches. Fuck those. Growing up in NYC you can't avoid them. Don't care where you live. Greenwich Village townhouse and we had that shit. Part of life unless you're in a brand new building and high up.