Tab is the same title. Critique is greatly appreciated.
There's little to nothing here in terms of actual content. The idea, though, is a pretty well-worn trope as well: miniature people building a miniature ecosystem. You added the detail about it growing inside of a person for horror effect, but that doesn't change the overall overuse of the idea in popular fiction. I'm not saying the idea can't be executed again, because who knows? but this execution isn't going to work.
As Eskobar said, it's short. The idea is a little worn.
Don't be afraid to stick to something. Mess up. Write a full length SCP and then get rejected harshly.
Really, though. Don't come posting it up here after 4 minutes of pooping type out of your brain. Take your time.
Then, people will appreciate your writing more. Taking your time will make you, your writing, and the idea in and of itself better. And if it doesn't, keep trying :D
I actually stopped because this was too close to SCP-2031. I'm to go back at rewriting it, but for now I have to do some real life stuff. Thank you all.