PCOS is a common condition in females.The main pathology in this condition being imbalance among the harmones.There is a reduction in FSH,which results in impaired development of ovarian follicle
.Coupled with this is the increased LH,increased adrenal harmones and increased androgens
.Because of this ovulation is supressed.In normal physiology,ovulation leads to the production of progesterone
,which inturn builds up the thickness of the endometrium,preparing the uterus
for conception.When there is no conception there is sudden fall in progesterone levels, resulting in sudden loss of support to the thickened endometrial tissue,which is then shed off during periods.As explained above in PCOS everything is reversed.Due to suppression of ovulation,there is deficiency of progesterone,endometrial tissue does not grow and hence no periods or delayed periods or irregular periods
.So, naturally the problem can be solved by administering exogenous progesterone which regularizes your periods.In my opinion it is the right way to go and taking progesterone is safe for you.