Depression problem?

I'm having a really bad depression problem ever since I've been pregnant I have been constantly depressed before I was pregnant it would come in spurts and I could easily deal with it but now it's harder to manage. My boyfriend is in basic and we can only write and I don't wanna express this to him as he's already having a rough enough time dealing with basic I don't wanna put another weight on his shoulders so my question for you ladies is if any of you have depression during pregnancy how did you deal with it? I don't really have any close friends that I really feel comfortable talking to I've always been a loner and my mom just doesn't understand she's hard to talk to. I keep myself busy but it doesn't help. I don't know what else to do its getting harder and harder to deal with. I've never had this problem. I told my doctor and she said it's just the hormones and to keep busy :/ I'm trying. Advice? Please