I have experienced severe depression, with associate PTSD, since I was very young. My question is: How can I tell the difference between my depression and areas where I am may be grieving? I look at many losses in my life, including ,my husband of 28 years. He is facing a terminal illness. I used to be the recipient of caregiving, but now am the caregiver. Where does my illness (bi-polar depression, PTSD) stop and grieving begin?