sick baby help!

Anne💜 • 27; engaged; phila, pa 👨‍👩‍👧 First time Mom to Queen Autumn Olivia-Marie (9/30) 🎀
My SO and I been battling colds for the last two weeks, and I'm getting very nervous my 6 week old will get sick as well.
As of now, she just sounds congested but I'm so so nervous she will get sick like us... it's inevitable right???
How do u prevent getting the baby sick??
What do u do when your 6 week old catches a cold!!