There was a traumatic episode in my life that never actually remembered until about three weeks ago, when my parents reminded me of it.

It was a memory of when I was 8 years old:
I was in school and at some point during a class I really needed to pee and we had to ask for the teacher's permission to go to the bathroom, so I did, and my teacher did not allow me to go so I peed my pants because I couldn't contain myself anymore.

After my parents pointing this event to me I started remembering a couple of like fotograms of it and now I am anxious about peeing my pants at university, 12 years later.

For context I should add that I remember dozens of traumatic events and I have no memory before 8 yo except for 2 very blurred traumas.

My question is: is it possible that I buried this memory to protect myself from the trauma?

And also, why remembering such a old memory brought back anxiety with it? Is it just imagining it? And if it is why don't I get anxiety by empathizing with others?