Is It Safe To Take Mifepristone After Unprotected Sex?

i had sexual intercourse yesterday night...ma bf dint ejaculate ...but he is afraid if he would have pre ejaculated it...he ejaculated the sperms using his hand and it was all outside nothng near ma vagina though..but we are afraid ..can i take a tablet of mifepristone 20omg tablet..plz reply