Ok, going to say it again. Breath, momma!
It really sucks having everyone sick like that. I'm glad your husband is getting medical care. Not just for him, but for your whole family. If one person is told what is going on and what treatment is needed, then that will benefit everyone in your family who has it.
It also means that if your baby gets it, you will know what to do, and what you are dealing with. You will be more prepared, and that is always a good thing. Remember, your baby is strong. Your are breastfeeding and she is getting a good boost from that. If she gets it, it will probably be rough to watch, but she will get through it and she will be ok.
How are you holding up? I don't mean to be rude asking, but is sickness a phobia for you? It seems to be something that triggers a lot of stress and anxiety. Is there anything that helps you relax a little bit and kind of recenter your thoughts and emotions? I am truly sorry you are dealing with all this. I hope everyone is over the worst of it and will start feeling better soon.