The toxins that you're speaking of are probably from the false morels of the genus Gyromitra. They have a carcinogenic substance called Gyromitrin that accumulates over time with continued consumption of some Gyromitra species.

@freeinthought It can't be stressed enough how important it is to do your due diligence when eating ANYTHING from the wild.

Feel free to send me your mushroom identification requests and I will do my best to give you a starting point on an ID.

Thanks for sharing your story.