In laws surprise arrival and stay...

So I just had my baby prematurely three weeks ago when he was 36 weeks through emergency c section due to preeclampsia getting severe. Nobody in my family has held the baby or anything bc he's so vulnerable with Corona virus going on and all that. My husband parents now this past weekend show up without asking us set up and air mattress have been here since and say they're staying until Saturday making it over a week of them being here. They held the baby once arriving without asking me etc. They cleaned the house for us, helped out blah blah so I kinda forgave the situation the first couple days, then mothers day morning I wake up to a huge brunch being cooked and my husbands whole extended family in our kitchen during Corona virus, some from Florida some from New York bringing the potential virus from all around the country, my premature baby being held etc. And his aunt brought their dog into our house as well and then someone petting it says "oh he has a flea" wonderful cause we have a cat and a carpet for those fleas. They did not ask either of us about this party they told us when it had already begun hey look a mothers day brunch. I would've loved a quiet coffee in bed with my newborn calm and safe for my first mothers day alone with my husband and baby to heal from my c section and be comfortable, but she didn't clearly care what I would like. It's weird that she would clean and be nice and blah blah but do this like maybe she doesn't understand how blatantly irresponsible and rude it all is?? I have just been nice and not said a thing up to this point bc I don't want to create a bad relationship with her that's never good for a marriage and my husband worships her and with how angry I actually am I may not be able to make myself as polite when discussing it as I want to. I've been thinking of how to let her know in the future she needs to do basic normal things like call, but not sure how to go about it without seeming sarcastic and rude since it's so obvious to me and I'm so angry. Any advice?