Just curious

So I'm not against having another baby right now though I know it's really soon my daughter is only 3 months old. And I've been wanting another baby really badly lately well last night me and my husband had sex and he didn't pullout or use a condom I just got done with my first period since having her on Saturday what are my chances of getting pregnant again already? I know I need to wait and it is ideal to wait but I'm not going to be upset if I'm pregnant again