Unless you have some seriously and permanently weakened immunity, exposure to colds and flus actually helps long term. Also you are potentially passing this increased immunity to your offsprings.

Of course going through it sucks, I am in same bandwagon with 2 small kids and getting often sick with same stuff they have. And they do have stuff basically semi-constantly from mid autumn to mid spring. Half the class has constantly running noses.

How do you think kids build their immunity? You don't get it by just growing up, its exposure after exposure. Protecting them too much from common stuff is one of the worst things you can do as a parent, they will have serious health issues and allergies later on.