Mona, 17, used to manage intense period pain by making hot drinks, swaddling herself in blankets and knocking back painkillers. Now, sheltering in a crowded refuge in Rafah, she cannot even rely on getting hold of sanitary pads or access to a toilet.
She often vomits because of acute menstrual cramps, and has to manage that as well as bleeding, in a small house crammed with 45 displaced people where there is no privacy.