Mental illness and raising children.

Avery
I have non-combat PTSD. It's hard on my "bad days" to be gentle and understanding with my daughter. I currently have no health coverage which makes it even harder because I have no medicine to help with the flashbacks, nightmares, moodiness, or panic attacks. I do my self-care regularly but I still slip and scream at her. I always feel horrible about it. 
How do you all manage?