They say that you swallow spiders in your sleep, but that theory has been debunked. Here are 11 REAL living organisms that could be in your body right now. To be honest, I would prefer the spiders.
This vile scum lives in your digestive tract and there are no signs or symptoms. The only way to know for sure if you have a Tapeworm is to inspect your stool and look for parts of the parasite.
These abominations cause an intense skin infection causing rashes and itching.
You may want to sleep with earplugs if you have an roach infestation because they are the most common bug to go wandering into your ear.