What can I do for this? Salt water? Listerine? I don't know what has happened - I have felt bad for going on 5 months now - all kind of tests and xrays. Wonder if all this has caused something else to happen now in my gums?

Ask your dentist about gum disease and demand that he tell you about and treat you for it if that is what you have...
Save yourself alot of heart ache.

and also do some searches on the internet about Gum disease. Knowlege is power.

Hope you feel better