Hi dear, I have gone through your question and understand your concerns. Delayed, irregular and scanty flow during the periods are most likely due to hormonal disturbances like hypothyroidism
or can be due to pelvis tuberculosis
or uterine adhesions.
I would suggest you to consult an OBGYN
specialist to get properly examined, investigated including hormonal profile, menstrual blood for tuberculosis, and if required, hysteroscopy
and get the further management accordingly.
Hope you found the answer helpful.
Dr Deepti Verma