No it’s not. It’s just a picture of a naked pregnant woman showering. She’s not in a suggestive pose, having sex, or anything else that would suggest sexual content. There’s nothing inherently sexual about nudity by itself.

If you say “everyone’s idea of what is sexual can be different,” I would agree, which I think is part of the point of posts like this: why does the most restrictive definition of sexual content always seem to be the point of view our lawmakers are protecting?

Edit: she’s not showering, I think. I went back and looked at it, when I read the post from my phone I thought she was showering.