A series for Bodyform about women who don't get periods. Supporting each other through periods is a familiar pastime for most women. From the colleagues trading ibuprofen and sanitary products on Slack to the housemates curled up on the sofa with a hot water bottle, watching Jennifer Lopez films, we've managed to turn one of the downsides of the female reproductive system into a bonding experience. But imagine, if you will, what it must be like if you don't get a period. For many of us, the first reaction to this is probably, "Great!" But it's an issue that requires deeper thought. Because of course, having a period carries factors which can be hugely integral to your life, from the camaraderie of period pain all the way to fertility.

Women don't get periods for many different reasons. Some may undergo early menopause, some have had hysterectomies for medical issues. Some may be transgender, some suffering from eating disorders. The reasons women don't have periods can be complicated and diverse, but don't take away from one central fact: period or no period, if you identify as a woman, you are a woman. Photographer Bex Day has travelled around the UK and Germany meeting, talking to and photographing these women.