Ok here's the background information. I'm 15 years old and a virgin. I masturbate regularly, however when I do I stop when i'm near to reaching climax, let myself calmdown, and then continue. I've done that nearly everytime I masturbate. When I masturbate and i'm not looking at porn, it takes forever to cum. However while looking at porn it takes about 30 secs.

(( i'm talking about non-stop ))

1. As a virgin is there a way to tell if you premature ejaculate?

2. Are these early symptoms of it?