Hello, kindly explain me - is it happening for the first time? since how long you have been suffering from this problem? is there history of the same in your past as well? any associated symptoms or complaints? any medical condition do you have? have you been to a gynaecologist
and got any investigations done (if yes, share the reports with me)? answer all these questions for proper diagnosis and proper treatment. Any nutritional deficiency can also lead to delayed menses. Also, if you are married and you do have active sexual life, get the pregnancy
test done first and share the report with me. Meantime, suggesting you general tonics which will supply your body with calcium and iron - five phos. And alfaalfa tonic - take both the medicines thrice a day daily for 1 month.