pholotinshep: mechanicbird: eroticmirotic: timemachineyeah: I’ve said this before and I’ll point it out again - Menstruation is caused by change in hormonal levels to stop the creation of a uterine lining and encourage the body to flush
tags: The Best Ship in the Multiverse!,
from: https://gallifreyinfinite.tumblr.com/post/630800133486936064