Daughter has a rash :(

Tahnee

My 7 week old daughter has this rash all over her body except for her face. I made an appointment with her pediatrician but she was all booked until late next week! EVERYTHING in the house is washed with baby detergent that I’ve used since she was born so I know it’s not that. There is nothing new in our routine she’s been introduced to. The bumps are red and patchy and are raised. I don’t have much experience with rashes. I’ve been giving her cool baths and I just bought some Aveeno Eczema Oatmeal Therapy to see if it helps. Does anyone have any ideas as to what caused it and/or how to treat it? Please let me know!!😇💗😅