Ok so I'm 16 right now about to turn 17, my penis hasent grown at all ever since I was 12 when I measured, back then I guess 5 1/2 was big but currently I know it's not, I've already hit puberty, I hot hair all over my body, I haven't grown taller either ever since I was 12 I've been 5'8 can anybody help me? I muster bated a lot ever since I was 12, nd now I have a gf, nd we have sex very often, sometimes I feel like I can't satisfy her, can you help? Will my penis still grow? Does it even grow past 16?