Hi Dr, Im 29 years old trying to conceive, I was advised to take letoval 2.5 mg from day 3 of my up to 5 days I used it and my cycle is usually regular that is 28/29 days but this time I'm delayed by 2 days. I'm supposed to get my cycle on 1st of July but haven't got it yet. And I'm having back pain which is continuous from 20th day of my cycle. Can you please tell me what may d reason. Am I pregnant or its pms. Does levotal causes delayed periods. Kindly help.