hi i had gone through your query and understand your concerns. i would come up with two most possibilities to fit your condition .these include
1.first possibility is,APTHOUS MOUTH
possible causes include;
-Stress or tissue injury is thought to be the cause of simple mouth ulcers.
-Certain foods, including citrus or acidic fruits and vegetables (such as lemons, oranges, pineapples, apples, figs, tomatoes and strawberries), can trigger a mouth ulcer or make the problem worse.
- nutritional problems, such as vitamin B-12, zinc, folic acid
, or iron deficiency
and gastrointestinal tract disease, such as Coeliac
disease and Crohn's disease are the other causes
2.second possibility for armpit lump is,FURUNCULOSIS
-maceration of skin,dusty,dirty environment,and ingestion of too many carbohydrates may predispose to furunculosis.
i advise you taking Homeopathic
medicines gives safe and permanent cure for your complaints
consult your local homeopathic physician for correct diagnosis of the case and remedy to fit your complaints
I hope this is helpful for you, thank you