Girls, can anyone tell me if anyone took vitamin B9 and B12 during pre…

Girls, can anyone tell me if anyone took vitamin B9 and B12 during pregnancy? I'm on my 12th week of pregnancy and ended up in the neurology ward with a pinched nerve and couldn't walk. They gave me painkillers for two days, then I refused them, and also refused ibuprofen. But they injected me with a course of vitamins B. Now I read that Vitamin B is bad for the baby ??‍♀️ I started worrying a lot. Did everyone who had babies take it?