First mushroom experience - abnormal?

This is my experience doing mushrooms for the first time. I am curious if anyone else here has experienced anything similar. As far as I know my reaction was abnormal.

It was a few months ago. I was advised not to eat anything in case the mushrooms upset my stomach. I had been on a plane earlier that day so I had a light lunch but nothing after that.

The setting was in the back garden of an apartment building. More wild than I was expecting but private and comfortable enough. It took awhile for everyone to arrive. I ingested 3.5 grams of mushrooms in a smoothie. It tasted quite good. It did not upset my stomach. The others seemed to be feeling the effects long before I did, but eventually, I did as well. 

Someone ordered pizza. I felt hungry but was unsure if standing up was a good idea. I decided to risk it as it was only had to take a few steps. I tried to eat the pizza but after only a few bites I started to feel dizzy. My appetite vanished. I held onto the half eaten pizza slice for a while.

I remember leaning forward and then nothing. Blackness.

The next thing I know I am on the ground, having fallen out of my chair. A couple of people helped me to stand up and get back into my chair. Later I asked how long I had been out. My friend told me maybe 20-30 seconds. She said my eyes were open the whole time. The best way I can describe it is it felt like my brain got rebooted like a computer. After that point I experienced several hours of dizziness.  I wasn't sure if my head would ever stop spinning.

After what seemed like several hours my dizziness subsided, I started to feel a  tingling in my fingers. I remember opening and closing my right hand. I could see a latent image of my hand as I opened and closed it. This was the only "visual" effect I experienced.

After a very long time I felt like I could stand up but I was not ready to walk just yet. I stood there for awhile. I mustered up enough nerve to walk back to the house. I could not feel the bottom of my feet too well. I was half floating, almost like my feet were air hockey pucks.

After I felt stable enough, I walked back to my hotel. I was in desperate need of a warm bed. I am not sure how long it took as my sense of time was compromised. I did not sleep at all that night. Not one wink. Thankfully the next day, despite the lack of sleep, I felt  "normal". I have never been more thankful to be sober again.