Thanks for the query.
I understand your concern.
Little bit of irregularity in periods can occur due to many causes.
Usually, menstrual cycle with length of 21 days to 35 days should be considered as normal only.
So, better to wait for three to four days.
If you don't get periods even one week after expected date and if there is history of unprotected intercourse,
please go for urine pregnancy test once.
If there is no possibility of pregnancy, and if you don't get periods even one week after expected date, please consult your doctor and take tablets to induce withdrawal bleeding.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.