Normal periods are mainly due to tablets specially oral contraceptives initially...normalisation of periods varies from person to person...we can't assure exact time...You should decrease carbohydrate intake, take foods made-up of whole grains like whole wheat bread, Decrease fat intake and increase protein content. Take high fiber diet, fruits, vegetables but avoid starchy vegetables like potatoes. Take plenty of water avoid sugar drinks....Consult nearest gynecologists they will do the needful.

It's absolutely  possible  to  regularise your period naturally if you have PCOD and I can help.If you  really  want  to  know  the root cause of your problem,  please  read my blogs on www.truhealing.com or practo health  feeds. Hope that helps....

Maintain weight and height ratio.. It will take time to start spontaneous ovulation... Till You need support from hormonal pills