Gynaecology & Obstetrics General e7632bb3 Blastocyte comes out on which day after feilization ? A 4-7 days B 10-12 days C 12-15 days D 15-20 days High-Yield Explanation Ans. is 'a' i.e., 4-7 days Free floating unimplanted blastocyst is seen on 4-5 days.