how to regular mensis without medicine

how to regular menses without medication ?
if there is underlying medical condition , there is no much area to home remedies and medication IS A MUST , but if there is no current medical condition or hormonal imbalance , its advised to the do the following :
1. avoid stress  and have plenty of rest 
2. healthy life style including health diet
3. regular exercise 
4. make sure of not taking any medication that may affect your period 
Possible causes of delayed period :
1. pregnancy ( if you sexually active ) 
2. Hormonal changes 
3. Some medications such as Medroxyprogesterone acetate
4. stress
5. Obesity
6. Thyroid diseases
7. gastic system disease (wheat allergy)
8. ovarian cysts 
9. malnutrition and low weight 
What is the treatment of delayed period :
1. have a home pregnancy test in the first week of the next period 
2. consult GYN doctor to do the needed routine medical test and determine the treatment pathways ( if needed ) 
3. in case of hormonal changes , doctor may prescribe medication to correct hormones imbalance such as duphaston , which you should take a pill every 12 hours for 5 days  
4. in case of thriod hormone abnormalties ( usually accompanied with other symtpoms ) , doctor will prescribe medication such as Levothyroxine
5. in case of other chronic disease such as ovarian cyst ( PCOS ) or other disease , doctor may need addvanced examnation to determine the causes and treatment pathway 
Needed medical examnation :
1. physical examnation 
2. Pregnancy test 
3. vaginal culture and urine test
4. productive system ultra sound 
5. hormone levels including productive system hormones and thyroid hormones