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There is no cause for concern, having painful cycle just means they are ovulatory cycles and ovulation has occured in previous cycle.
Taking a combination of analgesic
and antispasmodic like mefanamic acid will provide much needed relief from pain.
I assure you its unlikely to damage your reproductive organs.
In case you need any further assistance, will be glad to assist you.
Wishing you happy and healthy life
Dr T Shobha Deepak