Hi there ~
I understand your concerns. I believe that the severe pain
in your neck and lymph
nodes is a result of having a upper respiratory tract
infection and subsequently the enlargement of you neck glands. This is also the cause of pressure in your ears. Regularly using antibiotic rinses in your mouth and gargling 3 times a day will be good for your health and to get rid of the infection. It is also concerning that you continue to do drugs and you might be better off not using any substances till your body heals. If you have a problem quitting drugs you might need to consult a psychiatrist
who is very well versed
with substance use disorders.
I hope this helps. Take care and have a lovely day!