I'm 13, and last week I was masturbating to porn online and I noticed that my erection was weaker, and when I ejactulated, the sperm wasn't thick as it used to be, insetad it felt like water. I masturbate once a day, always with porn, but my ED is not caused by porn addiction because I can easily get an erection with only my hand, no porn needed (I don't even have to think about porn to achieve an erection, actually). I still have morning erections but they are much weaker then they used to be. I'm aslo very calm and am not experiencing any depression or any axiety issues. What is going on?