Birth control measures - Online Doctor Chats

Doctor :   Hi
Doctor :  
how can i help you?
User :   hi
User :   my name is srikanth
Doctor :  
ok
User :   i would like to bring few questions to you about
Doctor :  
ok
User :   my sexual life
Doctor :  
ok
User :   can you be able to answer the question sir ?
Doctor :   i shall
User :   thank you very much.
Doctor :  
please proceed with your Query
User :   i am married recently
Doctor :  
ok
User :   and i had sex with my wife two days back..
Doctor :  
ok
User :   but we are not in the present situation to have any kids now.
Doctor :  
ok
User :   i am not aware in what to do now so that
User :   so that we will not have any kids for another two years
Doctor :  
ok
User :   i would like to know after completing months.. or periodic cycle.. when there is sexual contact..
Doctor :  
ok
User :   when there is a sexual contact there wont be any problem itseems