I've been given this after taking ibuprofen and suffering from severe burning/gnawing pain between shoulder blades (no pain at front) and doctor said the ibuprofen had most likely given me one of the above. I'd like to know how long it takes for the omeprazole to take the pain away and has anyone had only the pain between the shoulders and not in the stomach or chest. The pain is worse when I eat and after eating and at night.