New to amitripyline.. not sure if normal?? Palpitations ?

I’ve been prescribed amitripyline for vestibular migraines. Started on 10mg at night. I’m on day 5, and the past few days I’ve noticed a few palpitations. Feel like my hearts racing but it isn’t. Obviously I’m very wary of new medications anyway so I’m very anxious so not sure whether it’s my anxiety or the meds. Anyone had palpitations when they first started and it’s a symptom that passes?