If you're reading this Follow-up and still haven't contacted a professional, the next 'move' may be the 2nd floor landing on the 1st floor, with you (in the least) getting seriously hurt.
Geesh, if I say any more, I'd be just making matters worst. Get a Pro in there right away!
Jay J -Moderator
PS: WHen you get a chance, post back and let us know what had to be done and how much it cost. OTHERS, down the road will benefit from such information. (Perhaps there is some good that can come out of this ...)