I, am 36 yrs old and 5' ht. Weight is 72kgs. I have a copper T and it is intact. I normally have my periods in 28days circle and very regular. For past 4-5 months my periods are irregular. First i got my periods in less than 20 days 4 months back. Then 22 days next month, 25 , and 28. But this month its already 35 days. I feel very mild pain sometimes. Why is it so. Can I wait a little more or should I consult a doctor. I dont think i am stressed. For past 4 months I dont eat rice or food in order to diet. I just have tea buiscuits, or cucumber or other vegitables and by evening 7pm I have my dinner. Weekly thrice i follow this routine and it is not very regular. Is it because of overweight or the food pattern change. Please explain.Thank you