Hi everyone i was wondering if anyone caould help/reassure me about something. I have suffered from acute anxiety and hypochondria for a few years since a bad car crash. A month ago i could tell that my mental health was deteriorating so i went to get it sorted. About a month ago i was prescribed 20mg citalopram and also 10 mg of the beta blocker propanolol. I also take zoton 40 mg for acid reflux. I have been feeling much better for my treatment however i am back to square one with a problem that has developed. I can just be sitting watching tv or reading a book and i get a fluttering in my heart like there is a butterfly in there. Immediately after this i get a feeling of deep dread and am convinced im going to die or have a heart attack. I have had anxiety attacks before but never like this. Is this possibly because of my medication??? im really scared that i m ight have a heart attack? Im 24 dont drink or smoke and have a vegetarian diet any help or reassurance would be much appreciated thanks in advance guys.