Hello doctor, my baby is now 6 months old, her first vaccination was given 17 days after birth, as see did not cross 3 kg minimum weight. till 2 months she does not have any swelling in that spot and after that she got swelling with pus . the bump got broken and broken several times and pus came out of it and still this vaccinated spot has either pus or watery hole and not yet healed. what should I do ?