Adjustment of Status - I-485

hello everybody,
my interview was for green card adjustment statue
i just do my interview on 07/03/2017 me and my u.s citizen wife , and my two little kids from my previous marriage , when we go inside the interview room we sit and start ask sample general question
and after 5 minutes he ask to separate interview and he start with my wife also she is pregnant waw , he ask her difficult and pacific detail from our life around 20 question and everything went fine and he ask me to start interview with me and my wife stay out with my kids
and ask me all the question again we match 85% the answer only one question
what is ur bedroom floor? i said wood and my wife said carpet . that all the huge different on our answers . actually our room have part carpet and part wood . believe me this was very sample question compare the question he ask and we match the answer . uh gad
he question was vey very deep on house detail and life detail i never read or hear this kind of question .. and after that he said the interview is complete and we unable to take final decision on ur case cause the security name check with FBI is not finish .
so u should wait 4 month before make any inquiry and i make my fingerprint on 04/10/2017 almost 3 month and still not finish the security name check.
what make me shocked i bring big folder have many many of document and photo that will make the interview more easy if he look at it , but he never ask or take anything of the photo or the paper , that strange why he did not ask for it . and why he separate us after 5 mints he was just ask our name ,,,, he did not lough or smile on my kids face our us . he was very straight and not give me any hope . just said wait for the final decision 120 days .. after finish the check ,,
what u think all of what going to happen , did u all think they going to come around me cause he wrote my work address dud they going to our home ... please help