PPD affecting my marriage

I am currently 5 months pp. my first few weeks went extremely terrifying in terms on my mental health due to a bunch reasons.( insensitive behaviour of people around me affected me badly) I got full support from my husband and he acknowledged how things didn’t go well from the family members. He has been supportive but I feel like the trauma just never leaves me and keeps coming back. I feel that he is not able to understand that my mental state is very vulnerable ever since I gave birth and I am finding it difficult to make him understand this. This is affecting our relationship and I suddenly feel I can never have the same relationship that I had with him before all this. I hate to say but never thought I would suffer so much mentally after having my baby( I love him more than anything in life and he is my whole world) but I cannot understand when will my ppd leave me. How to make my husband understand all that I am feeling and how he should deal with me?