Could a very small nasal foreign body that pushed thru somewhere in the cavity cause endocarditis?

Question unclear: Anything that places bacteria in the bloodstream, particularly if the organism has a high pathogenic potential, creates a risk of endocarditis, but this often requires the presence of some pre-existing cardiac condition that creates a risk. It is doubtful that what you describe will cause endocarditis, but have no idea what "pushed thru somewhere in the cavity" means. Elucidate.

Anything's possible: However, there is too much missing information for a good answer. If you have a normal heart, the chances are very, very small. If you have a known heart problem, then there is a slight chance. There is sort of an assumption in the question that endocarditis has already been confirmed and you are looking for the potential source. More must be known for a reassuring answer either way.