Can Medications Affect Pregnant Cat's Kittens?

My cat was recently attacked by a dog or maybe a fox, not sure which, and had to have her full tail amputated. She also has a big scar on her side. She had the surgery, but the vet told us she is having kittens. Does anyone know if they will be OK while she's on antibiotics, pain killers, and also had local anesthetic? I would be very thankful for some help has I'm very worried. xxx

By Donnia from St. Helens, England