What do you do if you're sick with a baby?

Bella • I'm Bella! 20 years old, recently married, pregnant with twins! I'm also an aromatherapist. Psalm 139:13
Today my husband said he feels like he's getting sick. Maybe I'm just paranoid but now I feel a little sick myself. We have twin boys who are 3 weeks old and I'll have no idea what to do if one or both of us gets sick. Has anyone out there been sick with a baby, and what did you do? 
Edit: To expand on my question, you're not supposed to let sick people near your newborn baby, so if you've gotten sick while your baby was only weeks old, what did you do to ensure your baby did not catch your sickness? Or is it simply unavoidable that they'll most likely fall ill too?