I took 4 grams of cubes one night while I was alone. When everything started to come on (slight visuals, body high, etc...) I was having a great time. I put on some Infected Mushroom: I'm the Supervisor and cracked down on the couch with Big Blue (my bong), which I ceremoniously keep with me when I shroom. That's a long story in itself...
I distinctly remember it was 4 minutes and 27 seconds into the 7th song when things just didnt seem right. I know that CD like the back of my hand, on shrooms and sober, and it just wasnt right. I laid there for a few minutes, which felt like hours, until I just couldnt take it any longer. The music was literally scratching my bones, and I didnt like it. As soon as I sat up, I realized what was happening... I didnt have anyone to call that would be able to come over and talk me through the bad trip, so I bunkered in with my smokes and water (unfortunately knowing that any green could set it off even further...). The literal feeling of your heart wanting to explode out of your chest; the coming and going of morbid thoughts; the ever-growing uneasiness that something terrible is wrong... During a bad trip by yourself, there is nothing right in the world. Nothing except what you can convince yourself of, and even that doesnt last long.
About two months prior to this, I had a very good friend over for a night of shrooms. He brought his own blend of this and that, which he dropped into some spaghetti to eat rather than choke them down raw. I really have no idea to this day how much he put in there... His trip went South real fast... and long story short I talked him through about six hours until he was literally scratching his brain trying to get the trip out of his system. He called 911, and walked out to the street for the paramedics to pick him up. Still thank him to this day for that move, seeing that there was an arsenal of this and that in the appt.
So, I did my best to remember how I helped him get through those six hours, knowing that mine wouldnt last more than that. Even though you can literally tell yourself that its all going to pass, and that life will go on... there's an abundant feeling of poison coursing through your body when you're having a bad trip. I think the only thing that stopped me from calling 911 was the fact that I had been through it with my buddy just prior to this night.
Once the negative had passed, after about four hours, I had an awesome time with the rest of the trip... The come-down is always a positive experience for me. I made it to bed about five hours after I felt the first signs of them.
Moral of the story... If you're going to take shrooms any time, you better be ready for a bad trip.
I've taken shrooms more times than I could count, and they're definitely my weekend entertainment of choice. I wish they were more readily available these days... Each time is a very unique experience, whether its a positive, negative or medium trip.
My suggestion is that if you have never done them then you should probably find a friend that has some experience. Make sure the environment that you take them in is a safe place for all.
Good luck to all!