Hey guys OP here. I'm a little late on the follow up but here it is anyway. I obviously complained to my mum who sat her down and told her how painful her pregnancies had been. My sister seemed adequately scared. My sister now insists that she had just been kidding but I know for a fact that she wasn't. And finally I assure you guys if she ever brings a guy home to 'stop her periods' I will personally get rid of him.