I'm 16 years old at 6.2x4.5 at my thickest. This is killing me because I don't want my girlfriend to be disappointed in me when we have sex. Should I jelq to get more girth?
There is nothing you can do to gain girth on your penis because it's not a muscle!
If your girlfriend is your age she is hardly going to be an expert on penis size either, at that age even if she isn't a virgin her vagina will still be tight making your penis feel big!