Depressed and struggling

Not sure what I’m looking for exactly, but I’m going through a hard time. I find myself falling back into being depressed and feeling overall numb and empty. My partner is out of town for the rest of the month, I feel like I’m bothering him by asking for reassurance and don’t want to be a bother and ruin his trip because I’m down. I’m 7 months pregnant. I also have 50/50 custody of two children from another previous marriage. They’ve been keeping me busy but leave tomorrow. I feel very alone, I don’t have other family in the area and no friends I feel close with. I want to tell him how I’m feeling but I don’t want it to come off as me seeking attention. I’ve been crying nonstop and really in a bad place mentally. Anyone else feel like this? What did you do to try and feel better and cope with the loneliness and depression?