I've met no problems while using a menstrual cup. I'd been using tampons before. But the kept stopping my flow. The cup doesn't do that. On top of that, the cup has many advantages i.e. very simple inserting. You only have to figure out how to put it in correctly. Another advantage is that empty it only once in every 8 – 12 hours (during light or medium flow). Moreover, you don't feel a thing when it's inside. The menstrual cup is such a great helper! Thanks to it my menstruation will never be an unpleasant experience.