Who to go to for PPD help?

I am 5 months pp and I felt great up until two months ago and now this past month has been a nightmare. I am mostly experiencing the rage part of PPD. Its gotten to the point of happening several times a day. I won’t go into detail but I am wanting to take a big step and get some help but who do I even go to? Do I start seeing a therapist? Do I call my OB? Both? This whole COVID mess has me scared to even go out anywhere but I know I need to get help. If I tell them I’ve had extreme outbursts or anger and thoughts of harming myself, can they take my baby away? I am so scared of that.