Chronic gastritis & acid/food reflux.

Hello, I am diagnosed with Chronic gastritis & strong acid/food reflux. My pain isnt stopping since 2 months My endoscopy was done a month back. Doctor said it will go by itself but it got worse. I have lost 13kg weight. When i eat food,food stays into oesophagus doesn't go into stomach immediately. Please tell how many more days will it take to recover. And how it is treated.because now medicines like pantocoid dsr started showing side effects. Is there any way that can relieve pain without taking these medicines? I am so worried and tensed.Since last month i have started headaches that dosent go easily once my doctor said not to take painkillers so avoiding but there isnt anyway to make my head clam. Before i used to take nimulid as painkiller through which my headaches gets relaxed. Please help what to do? This very frustrating. More over i am taking Etilaam 0.25 and pragbid 50mg Both for anxiety. Do these medicines have any effects on my current situation.