Hello I am a 27 year old man, I weigh 197lbs and am 5' 11''.For the last four days I just have not been feeling like myself. I get very spaced out and almost disconnected. It tends to worsen with exercise or running, it gets to a point where I think I might faint, like I almost do not know where I am. I think have acid reflux or possibly a hiatial hernia. I also recall being bit by a rather large strange looking mosquito about 5 days ago. I live in Brooklyn, NY. Could this be a heart/circulation problem? Thanks