I have an average period cycle of 25-26 days. Last one was on 2nd september. 31 days crossed, yet I didn't get my periods. Last month I had a lot of stress regarding many family issues, I find no other reason for the delay. For the last 10 years this is the first time my periods is delayed this much. I'm worried if there is a chance to miss this period, its my wedding on coming 20th. If I miss this month period I will have to take tablets to extend my next cycle because of my wedding. I have not taken any tablet till this time in my life related to periods. I am very much worried about this, is missing a period normal? And if I didn't get periods this time from when will I have to start taking medicine to extend the next one? Please help me doctor.