NO!
Those are probably Rhizopongo (sp?) and are a sign of good things to come. They help your roots grow.
psteve Reviewed by psteve on . GOT A SURPRISE TODAY I was checking my plants today. They are close to picking. I got a surprise upon close inspection I saw mushrooms starting to sprout in the one plant. They are little cute ones. I've been pretty good about watering, so no mold as best I can tell. What should i do? Pull the srooms or pick the plant and remove the plant pot. Rating: 5