Started takeing omeprazole for GERD bout 3w ago wakeup every morning with gut pain slight nasuea n gas norm get better after I take med at 11 why dat?

Need evaluation. Gerd can be a symptom of something worse. An ulcer could be developing. Or a bacteria called h. Pylori that resides in the lining of the stomach. If left untreated for a long time (years) can increase one's risk for stomach cancer. Treatment is with a combination of prescribed medication for a two week period. Long term otc omeprezole can lead to stomach lining atrophy and/or vit B12 deficiency.