So here's the results of the vet trip:
*They think she drools because of some missing teeth (some were pulled during her dental surgery).
*They think she limped that one day because she may have arthritis.
*The bumps were cut off and tested and they are benign and nothing to worry about.
*She probably used the carpet as a cat box because either she was stressed that I was gone for a few days and cat sitter had taken my place or it was just to painful to get to the cat box because of her possible arthritis.
*We have increased the dosage of her medications for her breathing trouble.
My poor girl must be older than we thought. I'm just glad I have this business now so I can afford to take care of her.