I'm not sure if I'm overreacting or not. I feel like a super anxious new mom. I just heard him making this noise within the last hour. He doesn't seem like he's in distress. I noticed him breathing really fast first and then heard the clicking noise. It sounds like his nose more than his chest. And sometimes I don't hear it. It also feels like he is purring. It is really hard to find a video of clicking from AP. He still wants to drink water and is moving around just fine. Added video. Just ignore my tummy growl in the beginning.