Thanks for the query.
You better consult gynecologist and go for hormonal evaluation.
Including: FSH, LH, estrogen, progesterone
, thyroid profile, beta HCG levels and hemoglobin
By these the possibility of pregnancy rule out and the chances of menopause
can be identified.
And also other hormonal abnormalities can be made out.
After these workup the possible cause for your problem can be sort-out and treatment can be given accordingly.