Husband infedelity

So i am married 2 yeara have a 7 montha baby girl. Discover yesterday he been cheating on me 1 month and aome more and that girl ia pregnant too. What would u do ? I love him with all my heart i feel so empty inside by my baby girl lights up my face that i cant even cry or do i have someone to talk problems out i dont even want to tell my parent about it.i decided to tell him i will give him one chance and to end it with her but to still look out for the baby she will have. I decided to tell him to give it a try to start over. I dont know if i ever forgive him but deep dwn i love him and it tears my heart. Do u think i make the right choice ??

Please i need some advice