your not on your own, the first time i encountered my time of the month on this diet, did i know about it, it was really really hard, i was extra grumpy and the temptation to eat was huge, i guess i was lucky in a way that it co-incided with my add a meal week, but i think adding a meal made me want to eat even more! the best way i could deal with it was to keep busy and go to bed early!!!
hope you get through it ok, you've done so well