hello, i am taking nitrofurantoin twice a day and taking cefuroxime after urodynamic proceedure which caused me symptoms like urgency and frequency urinating and it never end , it only happened after the proceedure, and the doctor thought i couid have infectio without checking my urine first. now after taking this fo about five days, i feel that my chest is so tight and my heart beating so fast, i wonder if its side effects of the medication, and I am still urinating so much , they were supposed to help to reduce that? any advice?