I was in the hospital for 4 days (2 days in labor ward, 2 days in maternity). Baby and I were discharged with a clean bill of health, but later that night, my son's body felt heaty and he was soooo irritated. We checked his temperature and it was 38°c and rushed to the ER and got admitted. Doctor said he had GBS infection. The thing is, I was already tested during my 36 weeks and it came back negative. I gave birth on 40 weeks. Is it possible for it to suddenly pop up, and should I visit my obigyn to get treatment? My next check up with her is 6 weeks later. Baby is already healthy by the way!