To calculate your menstrual cycle you need to count the number of days from the last day of you last menstrual period to the start of you next. Generally most women have a 28-35 day cycle, but it can be shorter or longer in some.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.