I'm a 21 year old male and pretty healthy. I constantly suffer from lightheadedness, dizziness, foggy feeling, random numbness in extremities, and hot flashes. This all started back in June of this year, one day I was driving home from work (I just started working at a bank in April) and was sitting at a red light when out of nowhere I felt like I was gonna pass out. My heart beat was loud, I feel out of it, thought forsure I might be having some sort of heart or panic attack. I managed to make it home and laid down and felt a lot better, it subsided about 5-10 mins after it occurred. I didn't seek medical help because like I said at the time I was very active, on the go, never had any true health scares in my past, I wrote it off as maybe not getting proper nutrition or sleep. From that day forward my life changed, I constantly, to this day, get spells of the symptoms I mentioned at the beginning. I've been to the hospital and had numerous tests on my heart and blood pressure (stress, ekg, holter, etc.) and all came back negative. The doctors said it maybe just simple dizziness/vertigo and to take things easy. I feel like it's way more than that tho and I'm really running out of conclusions as to what it maybe. I've taken b complex, eaten more, cut out caffeine completely, sleeping more, tried melatonin to help w/ sleep/stress, but nothing is working :(. I read it may just be anxiety but I don't feel stressed whatsoever, it's weird too because sometimes I'll drank a protein shake or even something as simple as OJ and I feel like I've been hit by a ton of bricks. I don't exercise anymore now because when i go to the gym I feel like I'm gonna pass out after one set of a workout. I want my life back so bad but not sure how, anyone have any input? Please and thank you