Having a fever with your baby can be a very scary experience especially for the first time. The way you can ascertain if they have fever or not is to take the temperature several times. You can take it by doing a temporal scan through their ear, under their arm, rectally or by scanning their head. Once you realize that they do have a temperature it's always better to err on the side of caution and call your doctor. As an expert and a mom of three I cannot stress enough how important it is to call your doctor if your child has a fever. A fever is a sign that something is going on within the baby's body, either a viral infection or a bacterial infection and we need to figure out wha'ts going on. Unfortunately fevers can also lead to febrile seizures in young children. So you wanna talk to your doctor to see what you should do for that particular temperature. Anything above normal for a baby, which is typically around 98.6, you would want to call your doctor and see, maybe you'll take some baby Tylenol, maybe just a cool bath, maybe added fluids, maybe keeping the baby cool. Whatever it is, keeping in constant contact with your doctor and taking a record of what the baby's fever is over the next couple of days will be really important and helpful during that time.