Psychedelic-like state on MDMA

Introduction:

I rolled for the first time yesterday with 4 friends, of whom 2 are experienced. We all did not eat much since 13:00 and rolled at 21:00. We drank enough though. We all took approx. 120mg, planning to take 30mg after 1.5h to make the fall of intensity less steep (suggested by one of the experienced).

The incident:

After one hour, everyone was feeling it, except for me. The friend responsible for the doses underestimated my weight (I look lighter than I am), so I took only 120mg while weighting 120kg. (He thought I weight 100kg). So after one hour, I took 50-60mg more. Then we headed out to go out with the dog and I started to feel it.

On the walk I had a unpleasant feeling. We all stopped walking because the dog was too far behind. Suddenly I heard a ringing in my ear and everything because extremely clear and penetrating. I instantly felt dizzy, overwhelmed by this feeling. I felt like I only felt myself and wanted to shut down from the overwhelming world. It was a feeling of singularity. I still felt joy and wellness, but I also felt like my head was enclosed by a wall of sensations, and I thought I will fall to the ground. I checked my heart rate and it was not higher than during sports so I didn't mind, nonetheless I told my friends that I would prefer us to head home and that I am feeling like I need to drink and eat. I remembered not to get hyped about my heart rate, since it could just potentiate itself. The whole time I had the urge to walk and after about 20 seconds it was over.

Back at home we were eating fruit, 3 of us headed outside for a smoke and I was sitting at the table with a girl having a conversation while eating. Suddelny, her words became very clear again and it was the same state I was in. I instantly headed out and it was over after 15 seconds of deep breathing.

I have a broad experience with psychedelics and it felt like the "o shit its going down" moment of LSD. Where you can feel yourself and suddenly lose the world. It was even the same way of hearing things, as if I had super-hearing and could hear every element of the surrounding.

Since I had this state two times on my first time, I figured it must be something common, however none of my friends have had this experience.

I was worried because it sounded like the description of an onset of an epileptic attack described in Dostojewski's "The Idiot".

I just woke up and am feeling fine.

Was this sensory overload? Did I overdose? Does anyone know the name of this state?