During ovulation, the chances of getting pregnant are higher than if you have in vitro fertilization. Under normal circumstances, that is, when you are not ovulating, the chances of getting pregnant with in vitro ejaculation are about 20%, but if you are ovulating, the chances of getting pregnant are greatly increased and can reach about 50%. This is because although it is in vitro, during sex, the male prostatic fluid has been left in the female vagina and if there is sperm, it will enter the female reproductive tract and meet the egg, and pregnancy will occur in this case. Therefore, during ovulation, you should never use in vitro ejaculation as a method of contraception, it is better to use condoms.