Baby scratching at ear

FTM, and My LO has been scratching 1 of his ears for 2 days now it even has a small scab. He doesn’t do constantly,but it does happen throughout the day. He’s never been sick at all, no fever, or cold.

I have read it can be due to teething, but i feel like he’s been teething for a whole month and still no teeth. Yesterday he was scratching with a lot of fussiness, I even gave him Tylenol, but today he’s been in a really good mood and great with naps, but still scratching at ear. Anyone else having anything similar or experience with it?