WTF mushrooms in my shit?!

Has anyone had this happen I have three little mushrooms just starting in my pot, how the hell did they get there?

to much water maby

i saw snails in mine

Spores for mushrooms are everywhere. If you're growing in soil you could have had a small colony of Mycelium and not even known it. If your soil ever smells overwhelmingly earthy then that's a good indication it might be contaminated with a mold or fungus. Your lighting, free air exchange (your fans), and high RH caused it to pin and develop. I'd check your room's RH it might be high. Also if your room's RH isn't high then you have a higher RH (near 100%) at the soil level of your grow. I really don't think you can do anything about your soil having a high RH as you want it to hold moisture. I'd personally just pick the mushroom out and not worry about it (pick them before the spores develop). Also a lot of nutes you use to grow your plants with mushrooms like to eat. Your soil also is most likely PH balanced so that makes it a good place for them to live too.

So these are the same mushrooms that grow wild in most yards?