To make sure and finaly got a pic
These pics will probably be removed (due to your age) as far as I know, if you are to post pictures, you are supossed to crop them down to the SMALLEST size possible to ONLY show the problem. I I I would say remove the pictures at this point (if you can)
As far as cicumcision goes: It dosn't LOOK like you were, but it is possible you got one called "Low and loose" (Which allows a great deal of skin to remain) There should be some sort of scar line visible, if that is the case.
Honestly, I doubt your parents (your father if no one else) will not be bothered if you ask if you were circumcised.
And like I said in my previous posts, there is no way to enlarge the penis unless you consider surgery; which is a dumb option unless you have a micropenis. In all honesty you're doing pretty good for being 12, your penis will not stop growing till you're at least 18 or so, at which point you'll probably be around 6".