Urination problem. Can be causing this?

I was suffering from frequent urination(with the volume/amount of urination being high each time i urinate) since 4-5 weeks. I have been on antibiotics like oford lb and another one along with urikind(flavoxate). When i took the medicines the frequency and urge was getting suppressed and when i left medicine it came back. Now recently i visited another urologist who had prescribed me with flaxocip for 5 days, 2 tab each day. And after that, its been the 3rd day since m holding off without urge or bladder irritation. But now, sometimes after peeing i feel the urine getting stored at the urethra of my penis which is causing irritation(feel of urine all the time). What should i do? Should i eat antibiotic for tonight? What can be causing this?