How Long After Taking MTP Kit Will The Bleeding Start?

hello sir, it s my 9th week of pregnancy but i don t want a child now, i am a student of IT and i am willing to do job for more 3 year. i have taken the MTP Kit on 16-04-2015 now 15hrs has passed but still i haven t got any bleeding or pain. when will the bleeding start. i am really in a depression now