Husband keeping quiet about Covid

I was exposed to someone with Covid and my husband is keeping it secret and seeing family who have a compromised immune system.

We are both vaccinated. I found out today that I was exposed to someone with Covid yesterday. I took a test today which was negative but I could have it and it wouldn’t show until a few days later. I want to quarantine in the meantime to not risk anything. We have a 13 month old son and I’m terrified right now.

My husband’s sister is in town visiting for Xmas. She isn’t vaccinated because she has a compromised immune system. So her and my husbands fam were at this restaurant and they wanted to see us. My son was running a fever for 1 hour and it went down after taking Tylenol. My husband left my son and I home alone and he went to the restaurant because he felt bad the sister drove all this way and he wanted to see his family. I’m really annoyed with him. How could he not mention to them that I was exposed to someone with Covid. He even invited them here and the sister said no, not if the baby is sick! My husband still didn’t say anything! I almost want to text them and let them know. I’m so mad. And, he wants all of us to go to his family’s Xmas party on Saturday and there will be pregnant people there, kids, etc. sure, I might not have it but what if I did! Let other people make a choice and not hide it. I’m furious with this big ass baby!