Are headaches, acid reflux, frequent night sweats, and trembling signs of stress and/or anxiety?

Maybe: It's always wise to really rule out medical causes first since treating those could be important and/or simple. If there are no findings, I'd ask for a Psychologist referral for an evaluation. Just a Rx will miss the benefits of learning better ways to manage life and a professional Dx is important - they'll refer if you need pills. Step-by-step, you'll find answers.

Could be !: BUT have a check up re general physical and tests like thyroid problems