Urination and pressure. Be ic symptoms?

Since last month i have been suffering from frequent urination(with the volume of urine being more). Each time i eat medicine the symptoms gets suppressed and when i leave medication it comes back. I was on a prescribed course of flavoxate 200mg twice a day for 5 days recently. After it has ended its the 2nd day of me being without medication. The urination is less than before and i try to hold the urine as much as possible and creating much time gap so that my bladder gets trained.. but when my bladder is full i sometimes feel very slight muscle cramp/feel of slight discomfort at the top right corner of my bladder(very very slight) and that also when i walk or cough hard.. so can this be IC symptoms? But i heard if you have IC you get frequent urination with less amount of urine. But my urine volume is more! And also flavoxate reduces the frequency... please help me. And my age is 21, m a boy. This prblem staryed around February 7-8th.