So I came down with the flu a couple weeks ago, and since that time, whenever I lay down to try and fall asleep, I get the feeling of a pounding heart in my chest and sometimes my body feels really warm to the touch, and I get minor sweating. If I do manage to fall asleep in this condition, which has been rare lately, I wake up with a weird sensation over by body, and the feeling that my heart is beating faster. I end up having to sit up and focus on letting it settle down. I suffer from Chronic Asthma and have Social and General Anxiety and Depression. I've got a doctor's appointment in a month with my general physical to talk about this recent situation, but I wanted to find a way to start figuring it out myself, to keep my mind from overreacting.