Talk to Psychologist on Anxiety

I am 26 years old female going to marry in august my husband is loving he used to live in dubai few days back i wokeup at night facing severe palpitations and shortness of breathe i went to ER my ECG nad ECHO was clear but heart rate was hb 10.2 they ask me to take inderal and bromazepam 3mg at bed time for and fefolvit for iron deficiency after taking this i become Good but faced severe hair fall now since last again i face anxiety at night could not sleep but hardly my situation become worst at night and i feel ok at day time i feel desire for sleep at night but cnt sleep due to shortness of breath and palpitations dryness of mouth i feel a fear that if i sleep i cnt wakeup for sehri normaly my mind keep thinking about i will miss my ill grand maa after marriage i will not meet her for long tym etc should i take bromazepam 3mg half tab again at night?? For how many days should i take it i am super restless Plz guide.