Can trauma affect normal memories?

I was in a 3 year abusive relationship (sexually and emotionally abusive bf) and since then I feel like I can't remember anything before my first traumatic experience. I still remember that my childhood was pretty fine with no problems but I can't remember any actual memories. It feels like my memories and entire life is entirely based on the abuse now. I've heard of people not being able to remember memories but it seems like they forget only the traumatic memories? It doesn't seem like a neural issue since I haven't suffered any brain trauma. The closest would be when my bf used to choke me during the sa causing me to pass out. I just want to know if this is caused by my experience or if it's some kind of brain issue. It would nice to know the name for this phenomenon ❤️. PS: I have severe DPDR due to the trauma if that's related