My thoughts exactly. It all sounds like a terrible experience all around. MDMA shouldn't be like that.
That being said, back in the day during a near overdose- my dog did start to freak out and think he was dying on the way home from a certain dance club. I had to take him for a walk along the beach and splash him with water to calm him down. It's only ever happened to him once though, and he definitely had maybe 3 too many

he recollects a flying feeling, like an
eagle
Maybe try taking a little less next time, if you wanted to try again. Try half, or even a quarter, and build it up slowly every 30-45min at minor increases so you don't end surpassing your comfort zone. Sometimes it's all about the people and environment you are in too. Stay away from anyone not partaking in the fun if you tend to get paranoid

my cat used to get freaked out around straight people.