Brief Answer:
Behaviour therapy and relaxation exercises can help in anxiety disorder
Detailed Answer:
Hello thanks for asking from HCM for your health related queries
I can understand your concern. After reading the history you have mentioned like feeling that something will happen wrong, poor sleep etc appears to be occurring due to some Anxiety disorder and not a sleep disorder. It needs proper evaluation and shouldn't be ignored. Anxiety can cause insomnia which can lead to depression and this may worsen into a lot of psychiatric disorders. Your BP and heart rate are in normal range and this is a good thing.
Stalopam Plus is a drug combination consisting of Escitalopram and Clonazepam and in my opinion this is right drug combination for your symptoms. The drug when taken regularly helps to control the symptoms of anxiety effectively. Don't fear of taking the drug for long because the drug is not a dependence producing drug and most of patients suffering from anxiety disorder take proper treatment even for long duration of time.
But if you dont want the psychoactive drugs regularly then in such case you can discuss with your doctor and can take medicines on SOS basis. The drugs like low dose benzodiazepines as Clonazepam, Etizolam or Beta blockers as Propranolol etc when taken on SOS basis help in symptomatic control of anxiety. Please discuss with your doctor for prescription of these drugs. In addition to these drugs please start doing Relaxation exercises like Progressive Muscle Relaxation Exercise, Yoga, Breathing Exercise etc. These exercises help to relieve the symptoms of anxiety and are very useful. When coupled with behaviour therapy these methods have almost same efficacy as medicines. Consult a psychologist for behaviour therapy and relaxation exercises. Don't ignore your symptoms because anxiety disorders tend to affect day to day work and if not properly treated then these disorders may cause impairment in day to day life.
Thanks, I hope this helps you. Please feel free to ask again for more doubts.