A woman discovered her male colleagues were tracking her period so they can avoid her when she is moody and 'stay away from trouble.'

The woman was talking to a male co-worker about relationships during their lunch break when the unnamed man told her she was single because she talked back, according to The Herald Sun.

When the woman, who is also unnamed, began to cry, the man apologised but then asked her if she was on her period.

An Australian woman discovered her male colleagues were tracking her menstrual cycle after she cried during a disagreement with a co-worker and he asked her if she was on her period (stock image)

The woman said she was on her period and asked the man how he knew, after which he revealed he had been tracking her menstrual cycle on a calendar.

'They want to stay away from me when I'm PMSing, because I get a bit moody,' the woman later told a friend.

It is a 'good strategy to track her period cycle in order to avoid unnecessary situations,' the man said, before adding that he was 'just trying to stay away from trouble.'

The man quickly confessed that he had been tracking her period so he can avoid her when she is moody and 'stay away from trouble' (stock image)

There are several online apps that allow men to keep count of the days between periods

After marking her cycle on a calendar, he then sent the calendar around to all of their male co-workers to keep track of.

There are several online apps that allow women to keep count of the days between periods – mostly for conceiving a child – but there are also multiple apps for men too.

PMSing, designed for men, can track the cycles of 10 women.

Another is PMS Meter, which keeps track of warning signs like irritability.