Depressed after husband went back to AIT after HBL

I got to spend 17 days with my husband who came home for holiday block leave from ait but had to take him to the airport this morning for him to go back to ait. I can’t function without him, everything reminds me of him and makes me cry. He was just in our bed 24 hours ago and I could reach over and feel him there and now I reach over and feel nothing. I feel like I’m mourning him although he is still alive. It probably doesn’t help that I am 8 months pregnant and being put through this but I feel like my world is crumbling. Any advice would really be appreciated, thank you.