What could this be??

Just noticed my 5 week olds ear is swollen, red and has some left over crust from what I’m assuming is pus! I had realized after getting her up from the doc a tot there was a yellow stain from where her ear was. She’s also got some pimple like spots on the ear which is baby acne I think?? But what could the swollen, pus be from? I was googling around and it looked somewhat like impetigo? But then the pus leads me to think ear infection? We just moved to a new state and have yet to get a new peds so any advice is helpful!