NQC - extraordinary! I've never heard that before.
I had perfectly good pfms before having children, but could never control menstrual flow.
About clots: while I've never had quite such 'majestic' clots, they were a regular feature on my sanitary towel, but since using the Mooncup I rarely seem to pass them at all any more. I wonder whether it's something to do with the way the stuff's collected? Whether being absorbed into a piece of cotton causes a clotting reaction which doesn't occur when the blood is collected in the Mooncup.
This is a fascinating thread - I struggle to comprehend why it repels women who, after all, generally have to deal with periods every month in any case.