boyfriend walked out on me

I am 20 week pregnant and also have a 9 month old baby.

me and my bf planned we wanted another baby so close in age and was looking forward to our other baby.

then out of the blue he just packed and walked out on me without a care in the world...i feel so hurt I can't stop crying I'm emotionally drained.

I see things on fb that he is out having the time of his life while no contact has been made with me to see how I am or even his son or unborn daughter.

how am I ever going to get past this hurt while I'm pregnant my hormones are not helping at all.

somebody must have some words or advice I have no family or friends to turn to where I live I'm scared 😢😭😢