For the past couple of cycles i've been leaking quite a bit even though the cup is neither full nor in a bad position. What could be causing this? I've been using the cup for almost 2 years and it was fine before. It leaks when i sleep and while i sit, and it's so much blood that it cannot possibly be the little that dripped down while i was changing it. I'm so annoyed and upset with the constant dirtying of my clothes.