Thanks for posting your query.
I am Dr.Ratnakar Kini (Medical Gastroenterologist and Hepatologist) and I am pleased to assist you.
Cancer is less likely.
You have dyspeptic symptoms which might be either due to the infection you had or due to the medications you have taken.
There is no need to worry about it.
You can take prilosec and probiotics for faster recovery.
Take prilosec once daily before breakfast for 4 weeks.
Take probiotics thrice a day for 2 weeks.
Let me know if I can assist you further.
Please feel free to ask followup questions.