This could be from Lyme or something else. I'd recommend getting it checked out sooner than the 29th if you can - one suggestion is to maybe call the LLMD with whom you have the appointment and ask who they recommend you see about this granuloma...
Good luck - I hope it is something benign and clears up on its own. Take care,
Chronic Lyme Disease, Bartonella (clinical dx only), Gluten & Sulfite Sensitivity, Many Food/Inhalant/Medication/Chemical Allergies & Intolerances, Asthma, Gut issues (dysmotility, non-specific inflammation), UCTD ("Secondary Lupus-Like Syndrome"), Osteoporosis, chronic Lymphopenia, etc.; G-Tube; Currently on TPN due to bowel problems.
Meds: IV Cipro, Heparin (to flush PICC line), Singulair, Domperidone, Colloidal Silver (topically & nasally), probiotics, Milk Thistle, Magnesium, homeopathy.