Hey anselmo, welcome to our forum! Best thing to do in your case is consult the doctor that prescribed you this medication. It is possible fo the medication to have a late effect, that depends of the gravity of your condition, the effects may come later. PPi drugs work by stopping the organism to produce stomach acid, so at this point, maybe you're only at the "preparation stage". People take PPI medication for years, this type of medications are mild, not aggressive to the organisms like antibiotics, normally it has to be taken for a long period of time to see improvements.
In any case, cotact your doctor, he/she shall know best. You doctor might change it to Pantoprazole or other PPI drug.
Good luck and be healthy!