The berries looked tasty so I picked them.
How did you feel after you picked them?
A bad feeling came over me.
It can be risky to eat wild berries, even ones that look tasty.  Even if you think that they may be edible fruit, if you get a bad feeling, just stop eating them right away.
I got my punishment. I don't think I'll be trying that again.
I'm sorry that you had a bad reaction to the berries, but at least you are okay now! And you know not to try that again!