Why is my 2 month old so clingy today and won't let me leave the room?

why is my 2 month old so clingy today! he usually loves to go in his swing and is perfectly fine being alone in his room for a little but today he won't Even let me be away from him or he continuously whines and I'm talking he doesn't stop but the minute I walk in the room he stops and starts smiling n stuff. it's cute but it's frustrating cause I couldn't get anything done today.