Hello. I think a spinal tap is a pretty big deal! Fungal meningitis is a very rare illness. Normally, the only people that ever get this are immunocompromised. People with say, HIV or cancer, for example , are at risk. Fungal meningitis is not also something you'd get from bathroom mold. It's more from things like bird or at droppings. Sometimes it is in the earth and if the spores there are interfered with, you could breath them in. But this is different than what you would encounter in a bathroom. Candida is what people can get in a hospital setting (fungal).
How are you feeling now? My guess is that this is not fungal meningitis. And blood work is one of the methods they determine so you'd blood work would have shown it. I hope you are feeling better!