BELLYBUTTON RING KELOID !! please help?

PLEASE HELP !! well, i have had my belly ring for 3 years now . I got it done by a person that didn't know what they were doing. Well im so humiliated by my keloid i cant even look cute in my bathing suit. but i love having my belly button pierced i don't want to take jewelry out. People keep telling me to use tea tree oil but i have no idea were to get it from.and should i take the jewelry out when im using the tea tree oil. ANYMORE THINGS I CAN TRY !!?? PLEASE help its SO ugly let me just add that i got this piercing done secretly (mom doesn't know). Its like the size of a skittle on the bottom of my piercing.