Can you elaborate your "spiritual experiences". I would love to read about them. It's not often that you hear an atheist having an experience like that.
Who cares about the experiences, let us just hope it isn't some dangerous physical disease.
If you want to see your god, use the classical way -- eat too little, suggestion ("prayer") and get some infected wounds from self flagellation. :-)
Edit: I don't think atheists generally puts an experience like that in a religious context, but assumes it has something to do with brain functions (or that some strange mushroom got into lunch). Point is, you won't hear about these becaues atheists don't think they are religious.
Edit 2: To the downvoters, if you RTFA it mentions a classical problem that gives religious experiences: epilepsy.