19 Years old, weak erections

Hello all,
I am 19 years old have been experiencing erection problems lately. I have heard it may be from nerve damage casued by over-masturbation, which I believe I have done lately. Usually, my erection are rock solid and reach about 7.5 inches, but lately they have been incredibly weak and when measured, are about 5.5 to 6 inches. Very disappointing. Any ideas?

[metropolis]

It's hard to say. Masturbation is normal and there are no medical studies that show that it may cause ED, but, like everything else in life, don't overdo it. If your problem persists for more than three months, go see a urologist, but you are young and healthy and I'm sure you have nothing to worry about.