Anxiety Talk

Hi everyone. This is my first post in this site. I feel like I need a place to talk about my worries with people who have experienced what I have with anxiety. My anxiety is not severe. I have only paniced once in my life that the next day I lost my appetite for a few days and had this tight feeling in front of my head for months. Bu that was two years ago. XD The only problem Ive been having lately is the way I sleep. For some wierd reason I feel the way I sleep will interupt my breathing and blood flow. Last night I coudnt sleep till 3am. So I played games online like tetris and rpg games. I think this is because when I had a tight feeling in front of my head I tried to get rid of it by tightening my head with my mind but I ended up scarying myself because I got a funny tingling feeling in front of my head. Like when your feet falls asleep. So here are the current fears Iam dealing with. fear of interupting blood flow to my head, fear of going crazy, fear that my mind will go blank and I will faint(usualy happens when im depressed and in front of the computer for a long time). So yeah...Thats basicaly it. Usually my anxietys come at night. Especialy when im around a group of people. But the fainting anxiety is once in a blue moon. Like if im really depressed and alone. Which was like two years ago. Hopefuly I wont have to experience that feeling again. Also, I dont think this is bad. But I want to mention that I have imaginary friends that I made up when I was 14 to help me deal with my anxietys. Im 19 now but I still imagine interacting with these characters when I need to distract myself from the anxietys that might come. Also, falling asleep is boring and I feel like imagining things makes sleep more better for me. However, lately Ive felt like my imaginary friends cant distract me from the anxiety that my blood flow to my head is going to stop. Its probably because im trying to find a comfortable position and when I hear my heart pulses while laying down scares me. Because im afraid I will interupt my breathing. :3 Please comment and tell me what you think about this. Oh and this is probably irrelevant but my imaginary friends are all anime and when I imagine I imagine myself as a anime character with powers. XD Im not dum I just have a huge imagination

Thanks for the advice. : )I will try the breathing and muscle exercises. I know I have no breathing or heart problem because I got checked by my doctor. But sometimes these scary thoughts still scare me. But hopefuly they will go away soon