Before, for the last couple of years since I started puberty, I got random erections that usually lasted for at least 5 min each. If I touched my penis, then it would usually take 15 min of ignoring it before it would go away. Now, I have almost stopped getting random erections altogether, and when I masturbate, sometimes my erections go away WHILE I am masturbating. They don't go away completly, but my Penis gets floppy-ish. It is still larger than normal, and I can still Jack-off. Is this normal? Or is something wrong?
Also when I look at porn, half the time, I don't get an erection at all.