There might be many reasons why someone feels that way. I think if you're growing, you're usually aware of it. If you feel weird for no apparent reason, without having tried something new or overcome any challenges, then it might be due to illness, hormonal imbalances, poor sleep, or something else entirely. There's rarely just one explanation. Thinking about personal growth is nice, but you should also question and validate it instead of simply sitting back and believing that something is happening when it might not be happening at all.