Heartbroken

I had to put my baby down today. He was only 4. The sweetest dachshund. He developed IVDD just a week ago and hit stage 4 yesterday. We were ready to move forward with the surgery then overnight he went to stage 5 with loss of sensation in his legs. We had to make the heart wrenching and awful decision to let him go. I’m 35 weeks pregnant and not okay. I can’t eat, can barely drink. I know I have to keep myself healthy but I’m truly and utterly heartbroken without him. There’s a heavy pain in my chest. Any words of advice would help. I’m starting to build a wall and not letting myself cry anymore, because I’ve shed so many tears I don’t know if I have any left, and it hurts to keep crying. I’ve never experienced this type of grief.