This is my 4th or 5th cycle using a cup. I've been using a large Lunette (27, sexually active and trying to get pregnant for the first time). I love the cup and have had no problems except for running in the morning. I empty the cup before running and still have leaks. I've noticed lots of posts and suggestions about swimming, biking, and yoga, but not many about running. I'd prefer not to buy another brand/style to try just yet because I'm trying to get pregnant but I would love any other suggestions! Thanks!