Hello MissDMT
I doubt saying things like SWIM will save you from trouble, although being cautious is usually rewarded in this area of life.
On the matter of DMT, what you describe sounds to me like a small amount of dose, like 10-30mg. EDIT: Although, some say if vaporized correctly it can be life changing!! These things should be carefully measured and used correctly. Ego death should deff occour on a breakthrough dose, so my best bet is right here

Still, if you want us to give you an answer you can use, we would like to be given a report that we can use instead. What dose did you use? Do you know for certain it was 50mg? Did you vapourized it properly?
Also to be very honest with you, there is nothing wrong in trying DMT as your first psychedelic

In my book, something like an overdosed LSD or mushroom trip that gives you a hell of a bad trip and scares your pants off will do more harm, than a properly administered hyperslap from DMT.
Hell even a bad weed tripp full of paranoia can cause more harm than an intense DMT trip.
I hope I phrased things correctly to your understanding
A second chance? Huh... I thought I was on my fifth.