Starting to get sick

I think I'm getting the flu, I never get sick but due to school and the new baby with a SO working overnights I'm drained. I feel so bad because I was very close to my son's face this morning giving him kisses and playing. I'm hoping that because I EBF he's starting to get some resistance to whatever I have. I just feel horrible when they're this young and you can't do anything to help them when they're sick :(