Can Medications Help Increase Penis Size?

Hello, i am 19 years old, and extremely afraid to go see a doctor in person or to even talk with my parents about this...but my girlfriend and I have decided that my penis fully erect is quite small...I have been reading on possible ways to increase my length, and have come across excercises such as jelqing, and pills such as Vigrx plus....is there any advice you could give me or forewarnings..? Thanks