What Causes Pain And Burning Sensation In The Abdomen?

hi my name is apryle im 58 years old well i have been sick for the last 8 month and its gotten worse the past 4 monthes i have burning and pain in my stomach well ive lost 50 pounds durning the 8 monthes i went to er rooms 5 times well they finelly did a ct scan and they said they found some leigions in my stomach at that times they sent me to have a endoscopy that was over a month ago well it came back i had an yeast infection so they gave me some treatment for 14 days durning treatment i was still throwing up so i called the doctor back and told her that i was so weak and i was still throwing up now they r going to do another endoscopy with an ultrasound does this mean i still might have cancer