Hi,
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Changes in period pattern and blood flow could be due to various causes. It is difficult to comment on the cause for your symptoms without examining you. You should consider visiting your doctor/gynecologist for further evaluation to look for the underlying cause for the altered periods. Get started on treatment as appropriate (as indicated by examination findings and investigation results) to help you. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Take adequate rest. Drink plenty of water. Maintain healthy diet and lifestyle.
Take care.