For Catherine Harvie, the challenge of confronting the stigma of women's periods took on a new level of meaning and importance after a trip to Uganda in 2010.
"I was asked by local women if I had any spare disposable pads," she said.
"I gave most of my own supply away … and learnt [about] the other options that these women were using: dried leaves, pages from exercise books, cow dung, old rags."
