Is this the reason for IP?

Hi ,
I had regular periods post pregnancy,but since two months my periods are getting irregular.Mostly the reasons should be stress ,changes in food habits ,hormonal or any unknown issues. I know that Iam not at stress and then found the real culprit of my irregular periods.thats skipping my breakfast or sometimes satisfying with a banana and coffee.
Before pregnancy I had IP and thought the reason was stress( was working that time).Being in a PG ,I hardly had breakfast.there again it's coffee or hot chocolate.

So ladies if you are having IP,then check yourselves whether you are having a proper breakfast.This may be one of the reason or this alone may be the reason for IP.