I have not seen my period for 2months now and I...

?  What is the treatment for late menstruation
Treatment of menstrual cycle delay by using duphaston tab two pills daily for 10 days, with psychological and mental comfort and avoiding stress and anxiety, and regular eating healthy, rich in vitamins and essential elements for the body, with a lot of drinking water daily, treatment of chronic diseases such as thyroid problems ,and Pelvic inflammatory diseases 
?  What are the investigation required 
Clinical examination of the patient by the obstetrician-gynecologis , and Complete blood count , and Ultrasound on the ovary and utreus
?  What are the causes of menstrual cycle delay 

• Stress
• Anxiety
• Exhaustion
• Emotional instability
• Hormonal disturbance
• PCO polycystic ovary
• Thyroid dysfunction
• Pelvic inflammatory diseases
• Endometritis

? What do we recommend

• Regularly take the previous treatment, see a doctor if the menstruation continues to be delayed