Hi,
Don't get panic..
Just consult with your general physician.it may also associated with
kidney stone or appendicitis .only after complete assessment or by knowing your full medical history we will be able to diagnose correctly.
As u mentioned above you have pcod and associated pain regularly every month and this pain is different from that I can suggest you to consult general physician along with gynecologist to rule out the exact problem in you.
Health Tips
proper sleep cycle , healthy lifestyle and food habits will gradually reduce the health issues