Thanks for the query to H.C.M. Forum.
This delay in period or scanty menses or irregular periods
are NOT a common sign ( symptom) in married women .
Any abnormality is due to any disease .
This , we call as dysfunctional uterine bleeding
may be due to ,
1 Poly Cystic Ovarian disease
2 Fibroid in uterus ,
3 Hormonal imbalance .
Diagnosis can be confirmed by ultrasound
of ovaries & uterus with blood examination for various hormones .
Consult a gynecologist and get his opinion.
Good luck. Dr. HET