What exactly is this stomach condition?

Ok.
For the past 3-4 days, I’ve been having a lot of acidity (after eating a meal, at night especially, i’ve felt way too full ) Also, I haveb een belching quite a bit.
Today I went to the clinic, and was given omeprazole to take 1x daily and was told to take panadol for my slight fever (its about 37.4) Doctor told me it seemed like an infection fo some kind either cold and flu or gastric that was causing the infection.
I’m supposed to travel in 3 days to go home- do you reckon this will be ok if i contiue the treatment and keep eating the right food (bland stuff)?