I'm obsessed with figuring out wether I need a cup or disc it's about $100 each bundle plus $100 for period underwear but I spend like $30 a month on period products and I still leak thru all the time. I want to get reusable stuff so it's not as horribly expensive. I'm leaning towards the discs but it's all worrisome. My sister suggested an IUD because to lighten the flow I don't want to invest $200-300 on supplies.any thoughts?