Not exactly the same, different drug, however about five years ago or so now, I took a legal high one night. I was very naive about drugs and had been drinking, was told it was herbal and made a poor decision.
I went on to have an extremely traumatic experience where I couldn’t see, was vomiting, screaming and remember very clearly a moment of pure peace where I accepted I was dying and was just letting myself go, then my kids came to mind and I started fighting it, then like a finger click I was suddenly downstairs, completely normal and very confused that what had felt like a five minute reaction had actually been six hours.
The next day, my mind broke. I began having strong palpitations, I felt distant from everything, I kept crying and was absolutely certain the legal high had caused brain damage.
Long story short, I went on to have a complete breakdown, had daily crisis sessions and it took the mental health nurses around 3 months to convince me that I hadn’t died that night and was living in hell. Another three months of antidepressants and I began to get better but it took nearly a full year.
Looking back, whilst I definitely had physical side effects for about a week or two afterward, most of what was going on was mental. I was deeply deeply ashamed of myself, I didn’t believe I deserved to be forgiven for doing something that could have left my children without a mother and I think I punished myself for a long long time.
OP, I don’t believe that taking that dab of whatever did long term damage to you. Not in the physical sense anyways. however drug use can certainly trigger underlying mental conditions, such as anxiety and depression. I think it is much more likely that you have depression and need antidepressants which do indeed make you feel things again. I remember my consultant telling me that they were 100% certain that taking that drug only sped up what was always going to happen anyways, meaning I was heading for a severe depressive episode and taking the drug just made it happen quicker.
Since then I have had one more severe depressive episode and once again antidepressants pulled me out of it and gave me back my feelings.
Please consider the GP for medication. Please do your best to accept that you have not permanently harmed yourself.