Tommy, you could have a
Leucocoprinus birnbaumii ( yellow houseplant mushroom). Have a look at this and see if it matches
http://botit.botany.wisc.edu/toms_fungi/feb2002.html
I am going by the granulations on the mushroom cap, the colour, the slight thickening of the stem base and where it is growing. good luck !
A lovely spotting !!
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