PPA coming back and worse

I struggled with PPD/PPA after the birth of my daughter (FTM) it was at its worse from 2-6 weeks. I saw a therapist, went to support groups and started taking Zoloft. I was feeling so much better and my baby has been relatively easy going and happy. I noticed that several weeks ago I was having more, what I like to call “rage” dreams. I’m in a familiar situation and I’m just yelling/screaming and punching walls, throwing things and in a “rage” state. I was getting them more frequently. I mostly stay at home with her and work a couple of weekend shifts a month and I recently stopped exclusive pumping so I’m not longer breastfeeding and I feel like I’m back in the thick of my postpartum issues. I feel like I’m going to explode. Ive never been an aggressive person and haven’t had anger

Issues before all of this but I just feel so overwhelmed with anger most of the time and like I just want to leave and never come back. I’ve been even wanted to hurt myself, like punching a wall and hurting my hand or hitting myself in the head. I’ve reached out to make another therapy appt and I’m still taking my Zoloft but I was hoping to wean off of the Zoloft but now I don’t know. I’m not sure if I need to go on a higher dosage or if the anger is a side effect of the meds. I hope this is just my body adjusting to stopping breastfeeding because I hate feeling like this.