Hi, im 16 years old nearly 17 and started puberty when i was 13 years old. I developed fairly quick and apart from growing facial hair faster, not much has changed since i was 15 which was nearly two years ago. I have a deep voice, hair everywhere. Since i can remember, my penis has been the same size and there has to be something wrong. Its maybe just over an inch flaccid and 4 inches erect. I can ejaculate but it has not grown since i started puberty and neither have my balls, they are both the exact same size since i started puberty. I just need answers because something has to be wrong, im to scared to get in a serious relationship because of this issue. I just want to know if i should see my gp about this problem and know what they will do about it as i have heard they can inject you with testosterone and hormones to jump start the growth but i didn't know if this is true and how should i bring about this issue with my gp? Im not that tall, around 5'7 but there must be some problem seeing it has not grown at all, like i understand if its small but surely when any boy goes through puberty it grows , it doesn't just stay the same. I have heard that growth in the penis and balls is one of the first things that happens in puberty and i have started nearly 4 years ago so something is not adding up.

Thank you for your help.