"Bacteremic" would mean that E. coli, a germ which populates, (along with many, many others) our large intestine, is growing from a blood culture. Were that true, you'd be sicker than sh*t (good pun, eh?). You meant "bacterial".
I also kind of doubt your pneumonia was caused by E. coli. Most likely it's living in your mouth and throat along with many other germs and when you gave the sputum specimen, it was a casual contaminent. Just because it was in your sputum/saliva doesn't mean it caused your pneumonia, necessarily. Use a pleasant tasting, non-alcohol based mouth wash, and don't worry...be happy. Even if it was an E. coli pnumonia, you're over it.
Btw, your bill will arrive at the end of the month.