The blood is normal from a belly piercing to an extent. It could have been the sore and if you did not Get it done profesionally take it out! But if it was the Piercing Then ,don't wear dangling piercings, no touching it without clean hands and no changing the piercing.
Take salt and warm water and mix it, leave it on you belly button(in a small dish that sutrounds it) for a while(prolly until water turns cold) or get the spray solution from the tattoo parlor or hot topic or spencers. No creams! The wound needs to breathe and cannot be suffocated.
Also don't put a lot of pressure on it. Try not to slouch in your chair, sit straight so theirs less pressure on your belly. You can also take q-tips and dip them in warm water and clean the access points of the piercing.
It will heal, but don't screw with it until it does, and don't wear fake jewlery because that can infect it.
Yeah that will happen if they are relatively new, sound like you are irritating the area though. Make sure you don't take it out but once every few months, you need to give it some time to heal, also if you are going to clean everything up just dip your jewelry in some salt water and put some neosporin around the piercing. I only take mine out like once every six months or so with no problems.
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