moody and depression

I'm 16 weeks, since I've been pregnant I've been feeling so crazy with these hormones. I'm so moody, I feel depressed! everything annoys me, I feel so bad because I lash out at my partner and he hasn't done anything but love me. These hormones have made me so insecure and feel so worthless. I'm always finding myself mad or sad over the stupidest things. I'm literally going crazy, I don't know what to do to help ease my mind, ive tried taking warm baths with soothing music, I've gone for long walks. I have no idea how to get rid of all these horrible symptoms. Anyone else feels the same or have felt like this? If so, what did you try to feel better? I need all the advice I can get, I'm losing it and myself