I play with and stick weird things in my BELLY BUTTON

Glad to see there so many people playing with their bellybotton I have been playing with my bellybotton since birth i started to also suck my thumb at 4 years old as I got older I got more intense with my bellybotton needles knives paper anything in my hands ends up in my bellybotton I am now 24 and I do it all day all night while sucking my thumb my boyfriend hates when I play with my bellybotton he thinks it's gross since it's turned black and hard from too much touching but I can't stop it's a part of me I've been doing it for so long is anybody else's bellybotton turning black or has been black and hard I will put pick if someone else does thanks