13 year old penis growth

hey im a 13 year old male and I dont think i've seen any growth of my penis throughout the years, i am about 3 inches not erect. and i have not measured erect. not that wide also. the only thing I have noticed changes in is my pubic hair. i have been growing some.i will soon be going in to high school and this is where relationships really start so i do not want to be embarrassed because of my penis size. is this normal? any help?? thank you

adding: only reason ive been curious about this is because my friend in the locker room has accidentally pulled his boxers down when changing, and we were talking so you know i saw it.. and he had a larger penis and more pubic hair. also, since then I was in a relationship with a girl who went kind of fast and thought about how she might've wanted to have sex, i didnt want to be embarrassed.. now im thinking there might be girls in high school that i will have feelings for.. they might want to have sex with me, and i do not wanna be embarrassed