Hi, 
Welcome to Healthcaremagic.com. 
I had gone through your question I can understand your concern about your 
stomach upset and 
reflux esophagitis. 
There is no need to worry, acid reflux can cause esophagus cancer is not the only cause of esophagus cancer. It modern literature it can be ONE? But it is not proved till. 
Yes, lensiprozale (Prevacid) is one of the good medication for the reflux esophagitis. 
 Get a H. Pylori test done. It is major cause of gastric ulcer and reflux esophagitis 
You need to take other 
proton pump inhibitor like 
pantoprazole with 
domperidone  but keep in mind take it early morning empty stomach and don't eat for half an hour after taking it. 
Avoid spicy, oily, junk food, late nights food, alcohol, smoking,.. 
Raise your head side of bed about 4inches. Do mild. Exercise but not immediately after taking food. 
Hope my answer will help you and you can visit us again if you need more assistance.