Laughing hard?

I’m on day 2 of fluoxetine (not prozac but this sub is more lively than r/fluoxetine) and it’s not great - I feel tired/more anxious/derealised. I laugh quite a lot generally, I think it’s a coping mechanism, I’m known by my friends to laugh a lot. But with fluoxetine over yesterday/today I’ve noticed that I laugh less frequently, but when I do, it’s quite intense. It feels like I’m laughing at one of the funniest things I’ve heard in a while. I get maybe this is just one of those weird adjustment symptoms but I’d like to know if anyone else has experienced something similar.