Or you should get off of this website now and call a professional.
People can die if enough mold shows up in their house and it's not just a problem that's always easy to wash away. You could actually have mold within the walls that's spread over the years. I don't know how old your house is, but my old one that my parents rented was allready over forty and the landlords had let some walls in the basement really go to hell. The mold in the basement bathroom was such an issue that we had to keep the door closed shut closed at all times and we couldn't hire anyone to get it out SAFELY at the time. We've actually been advised to sue.