If there's one thing I can count on every single month, it's the sense of impending doom that creeps in just before my period arrives. The cramps, the bloating, the general feeling of ugh. Some months are manageable; others are so painful I've had to take time off work and spend the day glued to Netflix and my duvet. Like many women, I've always defaulted to whatever period products are on offer at the supermarket, but I never really feel good about buying them. But Riley , a female-founded, B