Sickness!

Help! I’ve got two kiddos down with fevers, cough, sore throats and sinus issues, and I’ve got a 4mo old baby… I’m soooo stressed about her getting sick! What can I do to help prevent her catching anything? My other kids are young too, so they’re all over/next to me & I’ve got baby basically 24/7 attached to me. So she’s definitely been ‘in the line of fire’ with their germs 😣 So far she’s had a touch of a stuffy nose, but otherwise seems okay, but this bug that my kids have, showed up pretty quickly. Does this sound like something she can get? I’m breastfeeding, and trying to nurse extra for that protection, but I’m still so stresssed.