Frequent urgency for urine. Before!

Hello before 2 or 4 days i have noticed my urination frequency increase one day at 10 12 times atleast i did my urine kft nd other test all become normal including cbc my ultrasound doc said i have bladder wall 5.4mm thick nd something called cystitis or i have 2 years anxiety issue hypochondriac doc give me nitrotoni antibiotics for 5 days but my doubt here is i have urine test negative no rbc found no other abnormality so why i take antibiotics in that i heard or read something about ic interstitial cystitis there're ports are normal but urgency to pee there although i have no pain no other burning sensation nothing just pee after pee i have to stand 10 min in bathroom to pee again nd again little bit that my problem nd my fear is ic interstitial cystitis nd ima male too have no issue before regarding my urination and i masturbate more likely in every 3 days since 3 4 years so is there something wrong with me or am i lil bit more anxious nd fear ofantibiotics resistance