I am concerned I have missed my period its been 14...

Dear Customer
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Treatment of missed period :
1. visit a GYN doctor to do the needed medical examnations and determine the treatment pathway
2. avoid stress and anxeity 
3. healthy life style including healthy regular food and exercise 3- 4 times a week
4. loss weight if you are obese
5. make sure that you are not taking any medication that may cause abnormal hormonal levels 
6. if you are sexually active , pregnancy may be a cause of missed period , so you have to do home pregnancy test 
7. do the needed medical examnation to determine the cause which is usually hormonal ( common ) and usually its corrected by hormonal supply medications such as estrogen 
Other possible causes to missed  period :
1. malnutrition and low weight 
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 
Needed medical examnations :
1. physical examnation by doctor 
2. physical examnation for productive system
3. blood test
4 productive hormones tests
5. thyoid gland hormones test
6. ultrasound imaging test
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Kind Regards