I feel like there's an issue with me not laughing enough. I can cry my eyes out with laughter when I find something in a video funny but not when people show me a video perhaps of an animal is messing about. My workmate has told me she's never seen me laugh. Whenever she laughs, I try my best to laugh but what she says isn't funny. I get paranoid that she notices that I don't laugh. Maybe oh it's funny in a quiet way. When someone shows me a video of something, I can't really seem to laugh. I feel numb. It's the same with trying to show my appreciation, I can't seem to show it well enough. I just feel numb. At one point, I was worried that I was losing my emotions. My mum has told me I sound cold. Is this normal or is there something wrong with me?