Is anyone pg and alone?

Hi, i am a mother of 3 beautiful daughters 3, 5, and 7. I got back with my ex in april, who is not their daddy. Well i ended up pregnant and with twins. He seemed to want to be in our lives until a month or so ago when we started bwing distant and literally didnt talk for days and days. Well i got home from church today and he was gone. Packed all his things, gone! I am very scared. I barely get by on bills by myself. I dont know what to do. I am 12w and 4d with the twins I have been blessed with. I am also high risk not only because of having twins, but because of having pre-eclampsia in my previous pregnancies and i am afraid i wont be able to work the whol pregnancy, let alone take care of me and 5 babies. Anyone else having a hard time? I need advice.