Bruh it can be so dangerous, I search for poisonous mimics of (mushroom). And honestly if a mushroom has too many poisonous mimics or toxic species of the same family, I just won't try to harvest it.
So far Oyster mushrooms are just about the safest to spot and harvest, I don't live in an area with chicken or hen of the woods, which is also pretty easy to identify.
When I was a kid we would have yearly morel hunts. My uncles were always scouting the neighbors' woods, and once morels were sighted we'd sneak onto their property and gather bags of 'em. We'd usually get about 10 pounds between the six of us cousins. Then Grandma would fry them up and we'd feast.
One year I ate at least a pound by myself. That night I got so violently ill I thought I would die. I never ate morels again.
Now you have me wondering if one of us picked a not-morel and I was the unlucky one who ate it.
That's wild! The article mentions it a bit but based on your comment I did more research, black morels or morels in general can cause really bad gastro issues.
Most articles and papers say is they are undercooked or just eating a ton of them like you did can cause what you felt on it's own. You didn't even have to eat a false morel! I had no idea, good to know!
Don you maybe have a mushroom consultation in your town? Don't know where you are from, but in Europe many countries have them and they can help you not to kill yourself.