Hi I Am Charlotte I Am 18 And My Partner

hi i am charlotte i am 18 and my partner is 20
i am 15 weeks pregnant and decided for an abortion i took first pill yesterday witch was 1 mifepristone that i took with a glass of water and my follow up for the rest and to insert in vagina and oral are tomorrow to complete it but soon as i took first pill i regreted it and am so devastated it was clearly wrong decision is it any chance i can keep pregancy.
many thanks