5 inches erect is perfectly average! The worst thing you can do is be self conscious about your dick. I’ve answered this question before though so see here.
Remember that it’s NOT all about the penis. Fingers, mouth, and tongue need to be equally important. If you master all four combined, then I promise you, you will NEVER have anything to worry about in that department. Men think it’s all about the size of their penis and that’s what’s going to please women the most. *RUDEBUZZERSOUND* Newsflash! It’s not all about the cock. And the guys who think it is? They’re fucking awful in bed.
“It’s a myth that using the penis is the main way to pleasure a woman” (Ian Kerner – look him up if you want!). It’s actually much harder for a woman to achieve a vaginal orgasm than a clitoral orgasm and since the clit is woefully neglected when you’re pumping away…it doesn’t matter if you’re 8 inches or 5 inches, it’s still not touching the clit, and therefore ignoring the central point of pleasure in the female body.
Stop worrying about how big your cock is and start worrying about what you’re going to do with the other means you have at your disposal to satisfy your partner. The penis is only one aspect of a much larger picture!