VIT D should not affect your period..
on the other hand, stress is one of the main factors that can affect your period..
you are 22 & on 10 000 vitD, i recommend to do a dosage of vitD in your blood also if you have not done so
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It is recommended that all individuals see a Family Doctor for a full medical examination annually. Adults should get their blood pressure checked (US Preventive Task Force), a flu vaccine (CDC) and more each year.