I had my first Panic Attack in June 2018, office related stress. Although to be aware that it was a panic attack took a month. Since then I had been on medication until recently i.e. 15 days ago my medicine course got over since then I have been suffering with lack of sleep, have become very anxious and always feel I'm going to fall down and die. I'm trying to concentrate on my work but horrible negative feelings make my anxiety go up. I also have been experiencing weird pressure in my head when I visit office during office hours