Is there anything to worry about no sign of a cold but green phlegm in spit and rapid heart beat 4 month old baby?

It is important to monitor your baby's health closely and consult with a healthcare professional if you have any concerns about their well-being. Green phlegm and a rapid heart rate could be signs of an underlying condition, such as a respiratory infection or a heart condition. If your baby is exhibiting these symptoms, it is advisable to seek medical advice to determine the cause and receive appropriate treatment if necessary. The healthcare professional will be able to assess your baby's condition, identify any potential issues, and provide guidance on how to care for them.