Reply to Constantly stressed about newborn catching something

My toddler has shown so much affection towards his baby brother since the day we brought him home from the hospital! So it was extremely difficult for me to tell him stay away from the baby when he was sick. I didn’t want to him to think he was doing anything wrong. Before I could even catch my toddler he would run to the baby to give him a kiss with a runny nose! With time it will get easier, I promise. My toddler is once again sick and with my baby being a little bit bigger I’m not so worried. The first three months is really scary. My husband thought I was crazy and my family would just laugh at me but being a mama you want the best for your kids!