Depression is real 😫

Hello ladies I am 20 weeks and 3 days, I have a 2 year old as well. My husband is on a underway "military stuff) he's gone for a whole month 😫. My husband is my protector, my lover, my best friend, my provider, the love of my life. I feel so lost without him and my depression is kicking in sooooooooooooooooooooooooooo bad. I can't help it. I am afraid at night, sometimes during the day. I only feel safe when it's day light outside. Once hits night time I am so scared that somebody going to break in my house (everything is locked up and sticks behind my windows) but still don't feel safe. I take care of my 2 year while he's gone, and try taking care of myself. All my son do is ask for his dad. I just don't know what to do! I just want to feel safe again and feel OK. Any advice would be great. Thank you ladies.