I've been put on some propranolol 40mg/day to reduce my anxiety and my heart racing/palpitations (blood pressure is fine). It's been 3 days since I get propranolol and started to feel side effect like dizziness, insomnia, and breathing a bit harder than usual (I don't make sounds like breathing harder, it just feel like my breath works much more to get into the chest than usual). Are those symptoms normal for the start or should I cut or remove propranolol completely?