Tips for pregnancy depression

I have been feeling very depressed lately, not suicidal at all but just very sad and not wanting to even get out of bed to do things I usually love doing, I am having a hard time because my SO does not seem to understand how I feel, does anyone have any positive tips to help me get out of this funk? I have felt embarrassed to bring it up to anyone else because pregnancy is supposed to be the happiest time but I am struggling.