Girls, I had this question. We were in the hospital and the baby was g…

Girls, I had this question. We were in the hospital and the baby was getting injections of antibiotics. At that time, I got a purulent tonsillitis, could I have infected him? Then I started taking Sumamed, I read online that after starting antibiotic treatment, within 36 hours, I can't infect anyone? Who knows, I'm so worried.