Doctor I have 36 circle length now what is my safe...

What does 36-day period mean ?
Well, this is not normal as the normal period occurs every 28 days ( the average is between 21-35 days) and it remains between 2-7 days as the normal average.

Treatment of irregular period:
Well, there are many reasons for irregular period, so it's recommended to visit the Gyne&Obs specialist for further assessment and management of your condition. If there is hormonal disturbances, birth control pills OCP can be prescribed. In case of polycystic ovarian syndrome, OCP can also be used with some other medications. Furthermore, It is recommended to have enough rest and sleep, follow a healthy diet regimen which rich in vitamins and minerals, and avoid stress and psychological pressure as much as you can.

Diagnosis:
History taking and clinical examination to be done by a gyn&obs doctor. Complete blood test to rule out infection or anemia. TSH thyroid hormones, as well as testosterone, prolactin, FSH and LH hormones, to detect any hormonal disorders. Pelvic ultrasound can also be performed to look for polycystic ovarian syndrome.

Causes of irregular period:

• Polycystic ovarian syndrome
• Stress and anxiety
• Thyroid disorders
• Contraceptive methods
• Early ovarian failure
• Malnutrition
• Hormonal disorders such as high prolactine level
• Others

Recommendation:
Follow up with a gynecologist to assess your condition.