I was just treated for H Pylori, same as you- 2 antibiotics. I did not get any issues related to the throat area, but I did my stomach.
My gastro told me most of the population will have H Pylori, however, some will never get symptoms from it. I just happened to get them. My stomach would burn so bad every time I ate something.
I got the breathe test after treatment & it seems like the antibiotics erradicated the infection. The infection can come back & different antibiotics may be needed.
If you are getting worse you need to go back to your doctor. I have also had a lot of lymph nodes removed (3) because they wanted to make sure it was not cancerous. I had two in the neck area & one behind my ear. Luckily they were NOT cancerous, however, I have two more enlarged lymph nodes in the throat area so now I must go see an ENT to see if he can figure out why. I don't think I have cancer for I don't have any of the symptoms except night sweats but I am female & 40 so that is what we chalk that up too...
Welcome to the gastroenterology community! I don't think you have stomach cancer or any other type of cancer. What treatment did you get for the H Pylori?