Okay so 2 years ago i went to the doctor because I had a few fainting spells. The doctor said I had orthostedic hypo tension (sorry if I spelled that wrong). And today I woke up and my heart was racing and beating really hard. Then, later got shaky and now the symptoms are still going on and I Dont know what to do any ideas? I drank plenty of water so I know I'm not dehydrated. And occasionally there's a heart beat that's really hard and it hurts but it is only like 3 heart beats. Someone please help I Dont know what to do. Thanks