@moimichme
Oh dear, that sounds nasty. I had pneumonia last year following on from catching a nasty episode of flu, and I needed 2 courses of antibiotics, the second time I needed 2 different ones. (It could have been worse, they nearly hospitalised me before deciding after seeing the X-ray that it wasn't necessary.)
To encourage you, I did get better, though I was weakened for some time. The tooth infection sounds nasty, though. I hope it all clears up soon. 
I seem to be recovering now, my temperature went up slightly earlier today but it's come down and stayed down. Hopefully that's it now, after 5 weeks. 