Depression is also a condition that can cause this. Get a full health screening before you go fully looking into a diagnosis, but definitely keep it in mind if, physically, things turn up normal.
Also keep in mind that depression & anxiety can be comorbid with ADHD, which can often lead to frustrating misdiagnosis and being put onto medications that may not work quote right (if you choose to go that route). Hell, I’ve been told that “[you] don’t have ADHD – it’s trauma! PTSD!” As if the constant invalidatation of my condition wasn’t one of the reasons in part that led to my mistreatment and development of PTSD.
I hope that you are able to get answers soon and have things improve!