I have a similar situation. I have “Organic cup” and it has two prominent manufacturing lines that go through the whole cup. When I insert or remove it, I have a burning sensation and I blame that. Once it is in there I don’t feel it, but sometimes, it makes me want to go to pee even though I didn’t need it. That is why I bought the monthly cup mini, it has less diameter. I hope this one will work for me :3.