Inside the gynaecology clinic of Karachi’s largest public hospital, the air felt several degrees hotter. It was only 9:30am on a Friday in late February, and the windowless waiting room was already packed with women jostling for a place to sit, calling nurses for help, and scuffling for an ultrasound. Asiya, 21, was pregnant with her third child. The baby was due in May, when the mercury often crosses 38 degrees Celsius, and humidity soars past 70 per cent, making the heat unbearable.