Why is my period 2 days late

Patient: My last period was march 1 2015-march 4 2015 my period is a 28 day cycle now i am 2 days late could i be pregnant

Symptoms: No symptoms

Doctor: Hi,Thanks for the query.I understand your concern.A little bit of irregularity in periods can occur due to ma ny causes.Usually menstrual cycle with length of 21 days to 35 days should be considered as normal only.So, better to wait for few more days.If there is a history of unprotected intercourse around the time of ovulation, and if you do not get periods even one week after expected date, better go for urine pregnancy test once.Take care