Metronidazole for BV and Bladder Infection

Anyone else taken this and been scared to death to take it? Im allergic to penicillin and clindamycin, doxycycline, and bactrim antibiotics. The doctor wants me to try this after a bad experience with the clindamycin … I have bad health anxiety postpartum and am scared to take this medication 🥲 I have so many med allergies and I’ve never taken this before.