Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. It is possibly a kidney stones. Previous infection might have caused predisposition to develop a stone. Get an ultrasound scan to look for any stones anywhere in your urinary tract. You can take antispasmodic drugs like cyclopam for pain relief. Drink plenty of water as minor stones will flushed away with hydration. If ultrasound shows stones better to consult a urologist and he will direct you accordingly. Hope I have answered your query. Let me know if I can assist you further.