cup rubbing and swollen

update: thanks so much for everyone's help. I now have super jeanies softer and no swelling or pain. When I use juju inside out works really well.

abbreviation of previous post:
I've been using a JuJu cup size 1 for just over a year and I love the convenience and not waking up in a sodden puddle of blood. But I have a large swelling I think the tail has been rubbing.