With that cloud of smug over your head no wonder she got pissed off. The 'period' was just an excuse.

My last girlfriend was a mess during her period, and I generally tried to avoid her just during this time so as not to get shouted at for nothing.

" * headache
* feeling bloated
* weight gain
* breast tenderness
* back or lower abdominal pain
* irritability or aggression
* depression and anxiety
* mood swings
* tiredness
* poor concentration"

Yeah now I remember how great it is to be single!!