You are 20yrs now and menarche on 11 yrs. Basically period may be irregular for first 2 yrs after menarche (due to anovulation
) which is quite normal. After that it becomes regular.
Your current problem is irregular period with facial hair. I think you are suffering from "OLIGOMENORRHOEA" due to "PCOD" (Poly Cystic Ovarian Disease
) and THYROID problem. So need to investigate properly.
It is defined as infrequent period and delay of several months in between and more common in pubertal girls.It is mostly due to inadequate maturation of H-P-O axis and inadequate hormonal stimulation.
The cycle are often anovulatory in first 1-2 yrs.Gradually full development of normal ovulatory cycle and it will not have any harmful effect in future fertility
1)Mental & physical stress like vigorous exercise
2)Anorexia nervosa-if wt less than 47kg,mens remain scanty.
So you need to do a USG, Thyroid function test, FSH/LH, Lipid Profile
with blood sugar, Prolactin
level to evaluate hormonal imbalance and consult to your gynaecologist.
Along with maintain a healthy diet, Control wt and Regular light exercise.
All the best. For further suggestion mail me.....my Id: firstname.lastname@example.org