Today I noticed the antitragus on our 3 month old s right ear is slightly swollen. I applied some pressure to see if it bothers her but she didn t seem to be bothered at all. My question is what could be causing it? Her head is usually turned to the right and she has started rolling onto her right side. I m not too sure if these play any factor in the swelling. She has an appointment with her pediatrician in 2 days to be on the safe side.