Although most women have a 28 day cycle (allowing them about 3 weeks before each period), a cycle shorter or longer is not uncommon, but it is not always "normal". I would advise you see a Tibb practitioner to evaluate and assess whether your menstrual cycle is normal or irregular. Depending on your condition and the history given they will be able to properly advise you as to what medications to take. You can try chaste berry (found at dischem) which is great for the reproductive system. Also use Livotibb as this will help your body metabolize hormones better and can be used in any menstrual disorder