Is it normal for a year to have a 32-36 day menstrual cycle and then out of the blue start on day 27?

Sure: Very few people have exact menstrual cycles. A 27 day cycle is still very normal. Track them over the next few months and see a doctor with your menstrual calendar if they appear to be abnormal. Consider starting birth control if you want better cycle control.

Your.period: I would say normal is a relative term when it comes to one's ministration. Many women have very regular periods others do not many factors influence it age. Emotional factors diet lighting. Changing living situation. Weight gain weight loss. There's nothing particularly to be worried about with the time being.