<prompt> A fertilized ovum reaches uterine cavity in?3-4 days5-6 days7-8 days10 days  <response>: ANSWER: A 3-4 daysREF: Williams obstetrics 22nd ed, Langman s Medical Embryology 9th edition page 45LH Surge24 hours before ovulationOvulation0 hoursFertilization24 hours after ovulation Day 1Reaches uterine cavity3-4 days post fertilization Day 4-5 post ovulationImplantation7-9 day post fertilization 