Hi Im Currently Taking Omeprazole For Gastritis For About 5

Hi im currently taking omeprazole for gastritis for about 5 days now feel generally ok during the day but still getting pains/uncomfortableness under right boob area,and in middle of back/shoulder blade area with lots burping (which eases these sensations abeit only momentary) and sometimes acidy burning sensation in belly of a night how long till the symptoms start to ease off?