Originally Posted by
HiGHROLLER 
Once, when I was about 16, had a horrible pain right around my belly button area that lasted for about a week. I went to the doctor, had a scan for cancer, and blood work done. Then one night Im stretching, reaching for the sky, arching my back and Im looking in the mirror and my belly button "releases" this **** like residue. I was so freaked out, I went to the ER.
The doctor told me I was gonna be okay and since all of my tests were negative from a few days earlier, so it wasnt anything really serious.....the next day he called me and said that he researched my problem and its just something that happens to people, usually younger (6yo-10yo), and its a release of fluids that have been there since birth and building since. The doctor couldnt even explain how rare it was for someone in my age to be having this problem.
My belly button ended up secreting this residue for about 5 days. I wore some gauze and tape over my belly and it was all good...had to change the dressing twice a day for the first couple days.
Maybe its something like that? Sounds like something that happens to people going through puberty, much like mine was usual pre-pubecent happening.
Dont worry though you are okay.