I’m not sure if you are depressed or not, but I DID go through the same thing when I started realizing I was depressed. I was either emotionless or easily ticked off about stuff. And very, very fed up with people. It may be that you need a breath of fresh air and to get away from people (that you’re normally around) for a while.
I was randomly able to take some time away from my family (which accidentally turned into a month long trip due to unforeseen circumstances) when my mood started getting worse and worse, and it did wonders for my mental health. Like I could smile and joke and laugh with them again. It was nice.
If you have the chance to get away from your normal surroundings and people and just take a breather, then go for it!