Please don't get another animal. Accepting a new animal in your life takes compassion and selflessness, and you are not there yet.

"And then, I know you might think this is selfish but I am unable to really concentrate on me with this going on and I need to concentrate on me and my health. It is taking up almost every waking moment and a lot of my money."

That's taking care of an animal in a nutshell. Or a human child. They have accidents and they get sick and they WILL take up all your time and energy and money even with good behavior.