Hi everyone!

I just wanted to ask for some advice/support/experience/anything.

My therapist asked me about my childhood recently and I said that I didn't remember anything earlier than being a teenager, maybe, and that this has always been the case. She was concerned I might have experienced something traumatic that had caused me to block it out. The biggest events that I know happened are my mum's brother dying and my parents splitting up, these both happened when I was maybe 3 or 4. I imagine this caused a lot of sadness and difficulty within my family, but I really don't remember. I know these are huge events that would have been hard for someone so young to understand, so I suppose that could have caused the block, but I can't stop worrying that there was something else that happened. 

Is it normal for there to be such an empty space where my childhood memories should be? It feels like I hit a brick wall everytime I try to remember.