Hi ! Good evening. I am Dr Shareef answering your query. Yes, it could be a silent UTI without causing any urinary symptoms and the headaches could be due to mild fever you might be having. If I were your doctor, I would advise a urine routine/microscopic and culture/sensitivity test and treat the infection if positive. At the same time, I would also advise you for an ultrasound abdomen and to get your self assessed by a gynaecologist to rule out a PID (pelvic inflammatory disease) specially if you are sexually active. Further management would depend on the physical examination and investigation reports. I hope this information would help you in discussing with your family physician/treating doctor in further management of your problem. Please do not hesitate to ask in case of any further doubts. Thanks for choosing health care magic to clear doubts on your health problems. I wish you an early recovery. Dr Shareef.