Anxiety in the morning or something else?

Been having this weird feeling when waking up. I will be very shaky like I'm freezing and my stomach will be in a knot with breathing being hard to control. Feels like fight or flight response but only happens after I wake up.

I have horrible diarrhea and then after it slowly goes away.

I have been checked up with nothing wrong and prescribed anxiety medication but idk if that will even fit something like this if that is the cause.