Re: lymph nodes everywhere
You can have shotty nodes, it's actually pretty common, but that's a crappy way for him to describe it to you. The insensitivity of doctors never ceases to amaze me. You have over 300 nodes in your head and neck area alone. 20 or 30 calcified/scarred nodes won't do you or your immune system any harm.
If you've always been super prone to ear, sinus, skin or lung bacterial/viral illnesses (two or more per year, lasting longer and harder to treat than most) you may want to get tested for Selective IgA Deficency. It's the most common form of primary immunodeficiency disease, where a part of the immune system is missing. It's often overlooked or misdiagnosed. Like a missing link in a chain, one small part can make a big difference.
Autoimmune diseases can cause multiple lymphadenopathy that comes and goes but you'd have symptoms of the AI disease - like rheumatoid arthritis, sarcoidosis or lupus.
Anxiety or agitation that's cyclical in nature could be bipolar 2 disorder or cyclothymia, both are easily treated through medication, diet and/or behavioral therapies.