Hello @rachel36, and welcome to the forum 
Love the mushroom pictures - looks like you have some fun friends in your yard! 
Just a note that I rehomed this discussion from Site Feedback into the Q&A Category. This is the place to go for calling on the coven and sharing questions! I hope you’ll get plenty of ideas from the community.
When something interesting happens, it’s worth exploring both the mundane and magickal potential reasons. I’ll second what Georgia said - if the conditions are good for mushrooms and the season is right, it’s natural for mushrooms to appear.
On the magickal side, Georgia is right that mushrooms are associated with fairies. If you spot a circle of mushrooms, it is known as a Fairy Ring (and it is generally not recommended to walk or step through it). In Poland, I heard people say that a sudden abundance of mushrooms is believed to be a sign that war is coming.
Other associations with mushrooms can include death and rebirth, a period of change, and cycles.
If you feel these mushrooms are a sign from the divine, I’d suggest taking your favorite method of divination and learning more about them and they mean for you!
Blessed be 