I am so freaking sorry you are going through this! But please know that you are so far from crazy!
I was molested when I was 4 by three daycare teachers. It took me 23 years to even remember what the room looked like. At such a young age, our brains don't always know how to cope and handle such extreme abuse, so our brains do the only thing they can sometimes... they shut down. It is not uncommon at all to not remember much.
I would highly suggest finding a new therapist. Maybe even looking into one who is trained to do EMDR. I will post a link below to explain more about it. Just something to look into.
If you EVER need to talk, please do not hesitate to message me!
You are not alone!
What is EMDR? | Trauma Recovery