a few things started happening to me one by one slowly and i just want to know if they related to anxiety, here's a list

* I find it difficult to breathe, but it's in a way where i need to yawn/take a deep breath but no matter how hard a try i can't?
* i wake up at night because i'm not breathing, idk, i barely remember most of the times it happened
* I also forget to breathe but occasionally, like, I would be lost in thought and realise i'm not breathing 
* my teeth chatter a lot, sometimes in the cold, sometimes even when i'm warm. But when it happens in warm weather i'm usually in a public space, it never happens when i'm alone.
* i get random heart palpitations