The silent treatment

When my wife gets really mad at me she stonewall me. It's been 4 days and she hardly acts like I exist. She got mad at me over a dream that I had and told her about after she made me. She thinks that the dream comes from me thinking she is sleeping around on me, which I really don't. It escalated when we where talking and at first I tried to text and apologize and she went off on me and told me to let her be and the a bunch of old shit in my face. Now she is acting like I don't exist and at first I was hiding in another room and I washed her clothes by hand (are washer is broke) but I was reading I should just act like I normally do until she comes around and apologizing and hiding makes it worse. Should I just act normal and how long do people do that? It drives me crazy and it's hard to not have an anxiety attack. I've never done this to her and it's the worst form of punishment to me. I'd rather get screamed at or my ass kicked than that. We have been married for 10 years and she's done this before but not that many times. Please help I hate sleeping on the couch.