I’ve forgotten a whole entire year

Gr

So In sixth grade it was pretty rough my dog drowned and two of my friends died from cancer one of them closer than the other. And I was dealing with all of the sudden having to take pills every day as my daily routine for my ADD and I was very depressed that year. It’s been four years since and I’ve completely forgotten everything that happened that year. It scares me. Because I was so depressed and suicidal during that time that my brain made me forget a year of my life. How depressed was I? I know I grieved a bunch and denied that my dog died for months and pretended that she was still there. But I have no idea as to what I learned in school or who my teachers names were or anything. It’s all just a blur.