squared off?

I think it’s far too small to have swallowed a rock and too young to be pregnant. I don’t know what to do :(

Hi there guys! I've had these mollies for a little while, and I'm just wondering. Do any of them look like they're squared off? I don't have a lot of hiding places in my tank yet, so I wouln't feel comfortable just letting nature take its course. AND, I have black gravel :/. I have a netted...