First Time Cumming

I first started jerking off when I was 13 whenever I used to get a boner. I would stroke my cock until I dripped pre-cum or ran out of time. When I was 14 I started watching porn and thats when I started stroking my cock daily while watching porn. One evening when I had some time to my self I started watching some porn and stroking my dick as usual except this time I kept going even after the pre-cum. It felt amazing and very tingly at the same time which made it impossible for me to stop. Within 5 minutes I felt my stomach sink and I stopped stroking as I began to climax and shot a what I remember to be a huge load all over my shorts, chair and floor. It felt so amazing but weird and thats when I realized I only had a few more minutes before my mom would walk in so I cleaned up as best I could with tissues and snuck them as far into the trash can as I could. I haven't been able to stop for more than a few days since.