Sore lymph nodes and lymph stagnation are common symptoms of a tick-borne infection*, and nature offers many tools to safely stimulate motion and cause drainage.
Cleavers (galium aparine) and Red Clover are well-respected tools of naturopathy for promoting lymphatic movement. Always check with your doctor or pharmacist to see if cleavers is compatible with your meds.
These are the ones I have experience with. St Francis Herb Farm is a great brand here in Canada, I’ve heard wonderful stories from people who went to see their little forest.