I am a 21-year-old male without ANY serious medical problems, past or present. Nothing I know of that runs in my family, either.
I prefer not to be judged based on my following explanation, I'd just like some answers...
The first time I fainted, which was about 18 or so days ago, I was high on psychedelic mushrooms with two other people in a house. We were all up in the kitchen; they were making food, and I suddenly got what I'm guessing was a very intense head rush, and the last thing I remember was reaching my hands up to my head. When I regained consciousness, I was on the floor with my friends calling my name, feeling very heavy and completely confused, obviously. They said I was out for about 5 to 10 seconds.
Now, last night, I was in a hot bath, and I had smoked a very small amount of marijuana and set up my hookah next to the bath. I understand this was not the greatest idea, but bare with me. Well I was super relaxed, and had the idea to walk to the store and rent a movie which got me kind of excited, so I got up rather quickly, which gave me a head rush. It was pretty intense (to the point where I was semi-blinded and had to hold on to something to steady myself), but it subsided long enough for me to step out of the bathtub and try to reach for a towel, but it sort of came back up and I suddenly woke up on the floor, again feeling very heavy, but less confused since I knew what had just happened.
At this point I was extremely disoriented and tried to walk into the living room to sit on the couch, but instead tried sitting on my computer screen. Anyway, I laid down on the couch, and attempted to stand up after about 30 minutes to get some clothes on, but even standing up slow caused me to feel dizzy, so I sat back down. It was about 1.5 hours before I felt stable enough to VERY slowly walk to the kitchen to get some water and come back to sit down.
Some other things you might like to know about me is that I have a high level of stress these days due to a very depressed phase I'm going through at the moment. I don't do mushrooms often, maybe twice a year at most. I smoke marijuana every day, but only a bit in the evenings. I don't do any other drugs. Right now, I'm 6 feet tall and weigh 175 pounds. The worst health problems I've ever had were weird teeth issues, which are long over.
I understand this is a lot to read, but I feel it's best to describe the situation in as much detail as possible, and I'm a little freaked out here, so I'd like to get to the bottom of this.
At this point, I'm even willing to heed any warnings about my drug use, because if they're the problem, some serious life changes may be in order.
Thanks to whomever ends up helping me.