What Causes Frequent Urination While Having Cyst On Bladder?

i m passing urine very often more than 10 times a day, after a doctors visit he did an ultrasound and thinks he saw a small cyst resting on my bladder. He says maybe its because my cycle is soon near and thats what he seeing and to come back after 4 days after my period. I m not sure what to time cause i ve been having this problem for a long time now and its getting worst. I hope that maybe you can shed some light on it for me. Thanks