Helppp......

So im 20 yrs old an 4 weeks pregnant an my bf has a 3 month old baby with a different girl its complicated . An my mom an bf both want me to abort well my mom supports me with whatever decision i make an he does to but they both think i should abort an i feel thats not fair i should be able to keep my baby . I need some opinions an support .

P.s me an my bf have been together for 2 years but some stuff happened in the being of our relationship which caused his first baby with a different girl