Struggling with Mood Swings and Self-Identity

So I am currently struggling with mood swings. I notice myself get very upset about things really easily. I’m planning on talking to my psychiatrist. I was diagnosed with PTSD. But to me, my anger stems from years of abandonment and emotional abuse. I will say that I am not the kind of person that would ever cut themselves. I am however struggling with what kind of person I am. I see myself as a bad person sometimes and I get these mood swings for no reason. I am gonna see my psychiatrist soon. I don’t wanna diagnose myself but I feel like there’s more going on than just PTSD. I have a lot of guilt and anger and sadness about my past and I’ve convinced myself that I am A bad person. I hope my psychiatrist can help me. If anyone knows what may be going on you can let me know but this is just to kind of vent about it in hopes that I can find someone who is going through something similar. Godbless everyone