My grandaughter is 14 days old today, has had cold symptoms( nasal mucus, drainage into throat with phlegm, coughing, some gagging after she breast feeds) for aprox 24 hrs now has a fever of 100.3 at highest but has dropped down to 99.6. Fluctuating slightly through out the day. my daughter is breastfeeding exclusively & she has had same symptoms as grandaughter with addtional upper respiratory symptoms, no antibiotics for her. pediatrician has admitted grandaughter to hospital. My daughter has concerns about a scheduled spinal tap, is this a necessary procedure? I would guess they may be checking for meningitis, is this a common procedure for a newborn with these symptoms?