Lasting antidepressant quality of MDMA

I used to take for fun in my early twenties and remember the low mood days following the experience. I’m 35 now and suffer MDD. After extensive research into therapeutic effects when done in the right setting, I gave it another shot. Been over 10 years since last dose, took 160mg a week ago and ever since then, I’ve had a constant afterglow. Is it possible that this will continue or will I eventually plummet in the next few days? Don’t plan on doing it again for at least 2-3 months