For anyone interested in DMT in more scientific way I recommend reading book DMT The spirit molecule by Rick Strassman (he made clinical study) and not take web article facts about DMT seriously, because often they are just Strassman’s speculations from that book, like that DMT is released when we dream, which to my knowledge has not been proven.
I tried Ayahuasca once. Went to Switzerland to take it there, was some days with a “Shaman”. Mostly the same reasons as you lol.
The throwing up part was horrible, and the first time I did feel nothing. I did want to stop taking it the next day (nothing worse on earth than throwing up) but the Shaman did make me feel bad…
Any psychodelics need to taken with respect to what they do to your mind, it’s no surprise you had a fearful experience taking it with strangers in an unfamiliar location. I hope your next experience is guided in a controlled environment with experienced people who care for you.