New boyfriend!!!

So I just got a new boyfriend I’ve known him for months before we got together. So I went to his house last night and of course we had sex (4 or 5 times) so I get in my friends truck and she looks at me with the most disappointed face then she goes in to say that I promised her that I wouldn’t have sex with him without thinking ( not like I had to think about it I knew it was gonna happen) so now she is kinda slut shaming me I guess saying that if I get pregnant that I have to move out of the house and move back in with my parents because she doesn’t want to even see the baby. Is it wrong to feel like I should apologize for what I did or to feel wrong( but so right ) about it??