I have an app which tracks my period, tells me when it's due, etc. Every month, my period is late by exactly two days. So my cycle is lasting 30 days, rather than the 'normal' 28 days. I'm not on any drugs/pills.
Is this 'normal'? Or should I see the doctor?
On a side note, I've noticed that my period has become lighter over the past year. Is this normal with age? I'm 30, no kids.