Secretly prescribing birth control

OK I have a daughter who is 8 yrs old who has been coming home with comments and situations (sexual) from school that kids have been telling her ..ps my kids get grossed out that me and their father kiss each other good bye so for them to ask why men put their privates in women is scary I can't protect them from real life but how do I prepare them for a situation that I was prematurely forced into???