Really worried about my belly button

I got my belly button pierced in November of last year...about a month ago so after 9 months of healing, I lost my belly button ring cause the top fell off and it slid out, so I bought a new one from a shop by the beach, and I've had it in since then. But now I find it stings a lot off and on and gets bloody and yellow/white puss a lot. It also sticks a lot in the hole when it used to slide around easily. I think it may be rejecting and I'm really scared. I had enough anxiety getting it pierced and I don't like how my belly looks without it now so idk what to do. Sorry for my hairy belly but what do you think?