I'm no expert but I have vague opinions.
On privacy - the fact that it was on facebook limits your case - if they could view it without being your friend then lawyers would probably argue you had no expectation of privacy - however if your privacy settings were such that you had restricted access to the photo and one of your 'friends' broke that restriction you might have a case against the friend - or if the documentary makers hacked into your account then that would be illegal (I'm guessing)
On the matter of intellectual property you would probably have to argue how their use of your photo deprived you of income generated by the photo. Social media being what it is (and not knowing the specifics) - that would probably be hard to argue - in fact often the opposite may be true, in that drawing attention to the photo provides you opportunities to derive income.
If you're really concerned seek 'real' legal advice - I'm probably not even from your country.