Had my oh home for 2 months and he's just gone back to work and he's away for 12 hours a day for the…

Had my oh home for 2 months and he's just gone back to work and he's away for 12 hours a day for the next two weeks and it's literally tearing me apart. I had mild separation anxiety before I got pregnant but now it's severe. I am suffering with crippling anxiety and depression without him. I don't know what to do :( I'm really sad.