Just because there's a lack of swelling and pain doesn't make it healed.
When referring to a piercing, healed is defined as: Totally free of any pain, swelling, lymph, blood, with a fistula stable enough to accommodate multiple jewellery changes with no discomfort or pain and having had none of these for at least a month.
Yours had 2/5. Not healed. Especially when classifying even a simple lobe piercing as healed, it still needs to have all of those checked off and a month of no incidents.
I've pierced more people than I care to recall as well as having over 30 piercings myself. Guns are NEVER okay.