What’s happening to my body?!!

I have always had extremely regular periods! A 25-26 day cycle and my period has never been more than a day late.

The past 2 months, my period has come 4-5 days late. In February I had a 28 day cycle, in March I had a 29 day cycle and now I’m on cycle day 30 and still no sign of my period starting.

I know I’m not pregnant.

However, I am turning 29 next week. Could my age be effecting my cycle getting longer?