Hello, livcamncod33,
I am assuming that your diagnosis of 
GERD and erosive 
esophagitis was made
after 
endoscopy and 
biopsy. I hope you were also tested for H.Pylori.
Ask the GI doctor, if these were done. You have been on PPIs for over three
months. I am not sure if you are on a single dose or twice daily dosage.
The best time to take the PPI is about an hour to hour and a half before your
main meals.
I am sure you have been told to avoid excess caffeine, alcohol, tomato based 
products, excess dairy . Milk contains calcium and it can stimulate acid biuldup.
You mention about increased levels of 
C-Reactive protein. All that means is
that you have some degree of inflammation, regardless of the location.
If you are following the above guide lines , and still having same symptoms,
you should make another appointment with the GI doctor for re-evaluation.
Some times , changing to a different PPI might work.
I wish you well.