hi from what you say periodes are irregular and scanty .this is what we call is oligoamenorrhoea.there can be whole lot of reason in clinical medicine. you need to go through history physical examination. it could be due to emotionsyour life style or hormonal in simple terms. doctor  after examining will guide you on exercise diet destressors correction of bmi treatment for hormonal  problems if any. so minimum test of ultrasound scan and hormones will be taken.regards .

Thank you for your question. There is incomplete information to provide a solution. It depends on the cause which needs detailed history taking and examination followed by investigations. Periods are affected by age, weight, mental state, hormonal balance, diet, exercise etc etc. The treatment also depends on clinical findings and whether the goal is occupational, social or related to achieving a pregnancy. Your gynaecologist is the best person to go through all these details with you and then suggest the treatment that is right for you.  You will need to keep a menstrual diary and return several times to review the effect of the treatment and results of investigation. best wishes