Black outs
i am a teenager, but i have been blacking out a lot for a few years. whenever i get up from sitting, or when i am just standing around i will black out. usually i will fall down so i always grab onto the couch or anything and wait for it to end. these only take 3-5 seconds, but sometimes they are painful and i need to clinch my teeth and grip something. sometimes they feel really nice though, like I'm high or something. i have also blacked out and when i woke up, i had no idea where i was and no memory of what had happened, but it all comes back to me in a little bit. it isn't drug related and i never have a hard time breathing when it happens. Is this normal?