I can't go pee without the cat or the kids yelling through the door, I don't have any "me" time, and…

I can't go pee without the cat or the kids yelling through the door, I don't have any "me" time, and now I can't even have my own bath towel without my fiance or my kids using it! I know its silly to get upset about, but can't I have something and it be mine? its just not fair. :/ even my pink and purple towels aren't safe and I'm the only female in the house! grrrr.