Can I let my 2 year old son rest with a 103 fever and cough, or should I take him to the ER?

At this point, monitoring closely is essential. A fever reaching 103.3°F in a 2-year-old, especially with a cough, can be concerning. Given you’ve already administered Tylenol, it’s good that his fever came down to around 101.1°F. Keep him hydrated and dressed in lightweight clothing to help manage his temperature. Observe how he is responding overall; signs like difficulty breathing, persistent lethargy, irritability, or difficulty waking up are reasons to seek immediate medical attention. If the fever persists over the next 24 hours or other symptoms intensify, consult with your pediatrician to determine if further evaluation is needed. It’s also worthwhile to consider fluid intake—make sure he’s drinking enough water, as dehydration can exacerbate fevers. Kid’s fevers can often be managed at home unless they present with significant red flags. Nevertheless, trusting your instincts matters too; if you feel uncomfortable with his symptoms or his condition seems to deteriorate, heading to the ER is advisable. Remember that ear thermometers can sometimes give higher readings if not used properly, so try confirming with another thermometer if possible, especially if symptoms are inconsistent with high fever readings.