How do you handle silent treatment

My husband and I used to never fight. Recently we have been. And I just don’t know how to handle it. We just finished so I am sitting in my car crying and all I really want more than anything right now is for him to come hug me and reassure me that this is just a disagreement and Everything will be okay but instead I know I will be getting the silent treatment for likely the remainder of the weekend.

* the argument is because of some stress that other family members put on us. He spoke harshly toward me and I got loud with him. It really shouldn’t be this big of deal. I just hate the silent treatment part. It’s like a child being grounded. I just have some anxiety and ptsd from previous life that after an argument makes me think he will leave and not being allowed to talk to him doesn’t help