Im almost 17 and my penis and testicles still haven't grown.

Im almost 17 and i starting to get annoyed because my penis and testicles haven't started growing. Im to embarassed to tell anyone in person - doctor, friend or family, so im resulting to online. So I would like to say im health and fit. I do running, cycling, football and etc a week. Ive never worked out so, this leads to me considering weights would help - boost in testosterone levels or something. The reason this bothers me is because it certainly doesnt look right from my point of view and this is stoping me from being confident with girls aswell :(. I know people going on about the girls not caring, but I know they do and at this age and generation they will tell there friends and then . . . yeah. So any help will be great full thanks.