Depends; has this swallowing of a kalung caused Pica syndrome, a disorder that involves an individual to eat non food things such as metal, dirt, and plastic?
If not, don't worry about it. People eat weird and unusual things when they're you.
@16falloutboy So what if it was in your mouth? How did anda menelan it is what I wanna know. anda couldn't have swallowed an entire kalung oleh accident -_- @Shadowmarioking Yes, it is indeed a pir with a mouth :D