Even into my twenties, I’d look in reflections to check for leaks, wearing black trousers on my period or wearing a pad days before I was due, just in case. It took two months and a pep talk from an ad on Instagram to find the courage to try period knickers. I wouldn’t reach for them automatically – the idea of free bleeding into knickers is too daunting – and until my friend mentioned them, they hadn’t been on my radar...