Because you've been managing your periods and your basically in charge of when you want a period by taking the pill , your body needs to regulate it's self now which is why your having spotting after a month or two you should be regular again and you may find your first period is really heavy .
Haha. Sometimes when you come of birth control, it also takes a little while for your body to adjust. It could just be that as well.
Yes I think that is the ironic situation! First month without birth control in my entire life and I begin menopause...unbelievable.