Your penis will change over time. Its normal.
Try looking at altpenis web site, you just need to sign up and then you can take a peak at the pictures of other mens dicks, so you can compare on size and shape, and then there is a link you can follow to look at some more.
Its not a bad site lots of info, for anything about dicks and more.
Good luck and dont worry.
This isnt a problem. You would be surprised to know just how different penis size, shape, and color there are. Remember, its not the size or shape of the penis that matters, its how you use it. Good luck.
it's not a problem, size does not matter
carl66