Hello,
Welcome to HCM.
I understand you concern.
You have not mentioned your age and sex. The symptoms you have mentioned are also too many and without any chronology.
Still I will try to help you in best possible way.
Your most important problem seems to be
lymph nodes in jaw line which are painful while swallowing. You have also mentioned soreness in chest, coughing of blood and mucus and blood in stools. These symptoms are suggestive of some serious illness like cancer of throat, chest or elsewhere in body,
Tuberculosis or other infection in chest. Some disorder of immunity can also be there.
I advise you to immediately contact ER. They may subject you to investigations like blood count, urine and
stool test, CT of head, neck and chest, USG of abdomen to arrive at the diagnoses.
I hope this will be helpful.
Take care.