I was in my hotel room today and had my cup in even though I wasn't expecting my period for four more days. I was standing up in the bathroom to take out my cup, and was pretty relaxed because I thought it was empty. I got it out and dropped it because it was slippery. Blood. All over the bathroom floor. Luckily I was by myself so I didn't have to explain to my aunt how blood got all over the floor, but it was still annoying to clean up. Am I just a mega-klutz and this never happens to anyone else, or is this the only constant disadvantage to using a cup?