If you ask 100 men are you having a large penis, most will say it is small. Penis size is mired with many myths and misconceptions. Size does not matter, what matters is how one uses it. You haven't mentioned what is your size in erect state. On an average , as per the survey done by a condom manufacturer a few days ago, the average size of penis in India is 5.5 inches. So anything around this is Okay. Erections happen due to blood flow in the penis. Thus higher blood flow can give fuller filling and can add to your length. Penis length cannot be increased by ANY means. Operations to lengthen the penis are done for ONLY those who have a penis less than 2 inches at full erection.