Depression

Do you guys think feeling depressed before baby comes will lead to postpartum depression for sure? I'm staying anonymous because I'm not really the kind to share personal issues, but I seriously feel depressed lately.. I know what triggered it too (husband)... but I haven't told anyone how I'm feeling, I just put a smile on my face and say I'm good.. even to him.. Idk what to do.. idk if i should say something to someone or just try to convince myself I'm ok. I'm due in just a few days and I'm afraid I'll take it out on the baby, that's seriously my biggest fear. I think i just needed to vent.