Why does it happen?
Scientists are still unsure about the cause of bowel complaints around menstruation, but it has been suggested that the hormone progesterone, which is produced during periods, might be responsible. Progesterone causes changes in the way the muscles around the wall of the gut contract, so it can make the digestive system more sensitive.
Should I be concerned about it?
Many women can experience variations in gastrointestinal symptoms - including abdominal pain, diarrhoea, bloating, and constipation – during their menstrual cycle. Abdominal pain and diarrhoea tend to increase prior to your cycle and reach a maximum on the first to second day of menstrual flow.