Anyone have parasite/alien invasion hentai? Like where a bunch of alien spawn are crawling around in a woman's uterus. Pic somewhat related.
I might have a few things. Here's a better-res version of your pic first though.
Dunno if this is what you're looking for. Sorry, can't find much that would fit your description, unless you want more like your OP.
before this thread dies,/d/ needs moar parasites.