The downside is the location, close to scalp ear and lymph nodes. If it is an infection it could be bad. If someone can watch it in person for you for evidence that it is healing (new skin growing, less redness, less swelling and scab drying up) it might be OK to see for a few more days. This is not something I am comfortable advising you from a photo, but if you were my daughter or sister, I would advise you to be safe and remove. Do you know someone you could ask to watch it carefully for you?