Hello Welcome in H.C.M. I read your query regarding sore throat, abdominal pain and dizziness though you are having some stress also. Here I would like to tell you that sore throat and upper respiratory tract infection is well known for progressing infection to gastrointestinal tract which in turn produces these situations- 1- Inflammation in gastric mucosa. 2- Acute inflammation and enlargement of mesentric lymph nodes. 3- Hyper acidity. These above factors are responsible for developing acute pain in abdomen and to manage it you should consult your physician for examination of respiratory tract and abdomen to reach to final diagnosis and treatment. Regards.