Will a Menstrual Cup leak when full? Can Menstrual Cup cause infections?

"Whenever we are shifting to a new thing, it might be a little difficult and it might be a little painful. So when a person is used to a pad or a smaller size tampon, you might find it initially painful. When folded correctly usually the menstrual cup are not so painful. As with everything a menstrual cup also has its learning curve. You can always find your own way of insertion and at the end of usage 2 to 3 times, it they become very comfortable to the patient. Whether you can use them during the sleep? Ofcourse you can use them during the sleep. what happens is when you place the menstrual cup into the vagina, a vacuum is created. So there is no chance of leakage or there is no chance of expelling of the menstrual cup, so you can easily place them overnight and they have an absorption power which can absorb the menstrual blood for 6 to 12 hours"