I have real problems in my bedroom

It's begining to rain through my ceiling. I don't know if it is an
infiltration or water condensated up there. I have no pipes above my
bedroom. Some days ago I was listening to radio 24 hours per day then the
misterious thing began to happen right above the radio. So I turned off the
radio then it stopped. Now my brother is working with his laptop upstairs
over me and it began again. I think I must shut down my pc for a few days
just to see what happens. I don't understand why the water concentrates in a
certain zone of the ceiling. This zone has some steel in it. My bedroom is
a little small, I spend too much hours inside with door and window closed.
Perhaps it's a lack of ventilation.