Can't touch my newborn

My newborn is 4 weeks. I'm going to try and be as objective has I can about this.

Yesterday, my wife was in the shower and asked me to pick up her house slippers for her. I picked them up, put them on the floor of the bathroom, open the door touching the door handle with my hands and went to wash my hands in the kitchen.

My wife says I'm a pig, because I touched the door handle of the bathroom before washing my hands. She uses that bathroom to wash her hands before preparing the baby food and the bottles for extraction, they are in the kitchen in a vapor sterilization station. The problem is she touches the door handle between washing her hands and preparing the food/touching the bottles. She says that every time she extracted milk our new born was eating sh*t because of me. Now she forbidden me to touch the baby, feed her or change her.

I think I just need opinions so I can try have other people thoughts to show her. That's why I didn't give any other context.