Metrodinazole side effect for BV?

So i had BV no doubt about it it was my first time having metrodinazole 500 Mg x2 a day for 7 days. I googled the possibly side effects and here are mine that I found to be true-sores in mouth, fever, painful ruination, frequent urination bitter and metallic taste in mouth, dark urine, headache, dizziness. Anyways my main issue is the painful burning urination and frequent peeing. It was so bad I thought I had UTI. Which I didn’t, the prescribed me an antibiotic anyways (not taking it unless the pain doesn’t go away after I’m done with the metrodinazole). I’m on day 5 for metrodinazole and I’m hoping by the end of day 7 the peeing issues will go away. Has anyone else had this bad of a side effects? Normally I never have any side effects when on antibiotics. How long does it take for the side effects to stop??? I’m taking azo once a day to get me through it. Also does frequent urination irritate the urethra???