Abdominal pain after mesopral, is it normal?

I have gastritis and reflux. And I am after antibiotic therapy for helicobacter. Found at gastroscopy. In addition, I am on a slightly digestible diet and I am accompanied by cramping pains in the area of the pancreas, duodenum. I have been taking mesopral 40 mg for 5 months and the probiotic drinks chamomile 2 x a day. And I don't see any improvement. Even when I get up in the morning, my stomach starts to hurt. I am still prescribed medication for 1 month. Should I continue to take mesopral or change to other drugs or maybe something else I should introduce. And how long the inflammation of the stomach is treated.