angry 24/7

I know pregnancy hormones can be really bad, but I honestly never feel anything other than angry. I have very bad depression and have since I was a young teen and if I got to a really low point I would always feel so angry. I've been very depressed since being pregnant to the point where I don't want to be here (yes I have a therapist and it helps in that regard) but I just don't know how to calm down, I'm tense all day, I could snap at the slightest things. It really bothers me because I'm not usually like this and I feel like I can't control myself. I've talked to my therapist but she just says it because I'm so depressed it's causing extreme anger. I feel terrible because this is such a happy time but I don't feel happy with myself or life, I just don't know what to do anymore. Have any other women been very angry during pregnancy? And did it get better after having your little bundle of joy??? I don't want my baby to see me as an angry person. Also can't take the meds I was previously on because they are harmful during pregnancy so I don't think that's helping.