I am trying so hard not to be mad but I’m livid 🤬

My husbands cousins kid is in daycare and my mother in law is always insisting on play dates and inviting her over every time my son is there. Well this kid is a fucking germ magnet and last week ended up getting really sick with a fever TWO DAYS after my mother in law had them play together. Now two days before a very important wedding that my husband is in my 2 year old wakes up crying and proceeds to throw up all over me when I do get him. I just want to ball my eyes out, as petty as it sounds I’m pissed because I bought my dam dress months in advance and stressed about how it looked, put SO MUCH planning into finding and setting up someone to watch my son and now there’s no way ill be able to go and I’m good conscience leave my sick baby. I should but right now I hate the cousin and my mother in law. Venting on here is everything I can do from blowing up at them. On top of all of it I’m 27 weeks pregnant and freaking out because getting this sick with a fever and vomiting is the last thing I need 😷😭😭😭🤒.

Back note: the mother knowingly allows her daughter to have play dates with my son while she’s sick and not tell me. And I’m talking every time she’s sick the mother wouldn’t say anything until after she’s sick. This isn’t the first occurrence in the least.