On my own with this pregnancy

My husband of almost 15 years walked out on us....after waiting for him while he was in prison for over 10 years of that...we finally get pregnant..he was so excited. Even though he raised my daughters as his own ...this baby will be his first, but i was just as excited as him. 11 weeks pregnant and he decides he doesn't want to be in our marriage anymore😢 i cant eat, i cant sleep...im so stressed and i dont know how im gonna do it on my own but I still want and love my baby. At the 8 week u.s we seen the baby moving the arm and legs...he was so touched he said he felt like he just seen God....how can someone love you one day and not the next! Since he left all he has done is just text me about money...and its not to offer it either 😡 any advice on what i can do to not stress...im worried this is gonna hurt my baby or cause miscarriage.