2-3 days ago, I noticed a spot on my gecko neat their tail that I haven't seen before. Should I be worried? Common name for species: Crested gecko Age: about 1-1 1/2 months Weight: unknown Sex:unknown -Housing Info- Tank size: 18x18x24 Heating method: ceramic heater, if needed Temperatures: about 72 degrees Type of thermometer: acurite Lighting: not needed Humidity level: 50-80% -Nutritional Info- Food offered: GDC Food eaten: GDC (not a lot) Amount eaten per day: unknown