an apology opened the door

This happened when I was young, my mom and I, had an argument and I said things I didn't mean. Later I felt guilty and decided to go to my mother and apologize. When I got close to her room, I heard moans coming out I thought she was crying or something. The door wasn't closed so I leaned a little to look. My surprise was my mother there bottomless, her legs open wide, and she was fingering her pussy. I stood there watching my mother come to a screaming orgasm. I moved away before she saw me and went to my room, took off my clothes and had my own orgasm.
I live in the Middle East and this was the beginning of my exploration, as the community is closed and uptight but I did my share of weird things.