Your newborn baby may have a soft region on the head that is bulging which is why he or she is crying for 10 days. Sometimes, it happens and is usually not so serious. Make sure that the baby is well-fed, sleeps actively, and shows no new symptoms. There could be several reasons that the baby is crying like feeding problems, change in environmental circumstances, etc. It is always best to inform your pediatrician if you notice anything concerning like constant crying, fever, or changes in behavior.