First time dildo

I was going to school, age 15. I got the idea of ditching school cause my mom was gone. I was aroused when i got home and horny. I snuck into my mom's room and was searching around. I found a dildo, I didn't know what it was so i took it. I was seeing what it was and found out. I went downstairs and stripped slowly while looking around aware of my surroundings. I started to lube my dick up, then my asshole. I started jacking off my long shaft, idk how long it is but it should be over 4 or 6 inches. then i slowly pushed in the lubed dildo into my asshole. It was a tight fit and i was scared what would happen. I started to chicken out of it but a voice told me to keep going. I pushed it in and finched. It hurt and i was scared i would bleed in my ass. so i started to take it out of my ass, but when i did i moaned a loud moan. some semen came from my pee hole. I think it felt REALLY good. I started pushing it in and out and i was having heavy breaths. I started moaning crazily and pushed it in faster and smoother. My penis was throbbing super crazy. Was I having an orgasm? I didn't know what it was until age 17. i screamed and came all over my chest. I sat exhausted from what I just did and sort of ashamed since it was my first time.