14cm is great. For your age. Fuck, just think what it'll be like at 20! No-one could complain about that in his/her/its ass, cunt, mouth, armpit. Just remember to keep on exercising it regularly when you're on your own, even try to suck it yourself. Peace. Niles.
normal size is 5inches, use google, or a ruler to convert that into centimeters, so no, your not excessively massive or small. anything between 4 inches and 8 inches, is enough to pleasure women, its the thickness that matters most.
The average size supposedly a bit over 6", which is about 15.25cm. Also, penises only grow from about the ages of 9 to 15 or so, so you still have the potential to grow. I'm no chick, but I'd say for most girls, anywhere between 13cm and 18cm is the target range. The "G Spot" is supposed to be only around 3-3.5" (7-9cm) on the top wall, so as long as you can reach that in most positions, you're all good. ;)
Average, actually. I thought it read inches. I was going to say!