ANSWER

Your penis size is in the normal range, but it always looks smaller when looking down at your own penis. Look at it in a mirror to get a better impression. What matters is that your lady is happy with it and you know how to use it to make her happy.

 
Your frequency of lovemaking is pretty low. Since you mention this in the context of talking about masturbation, I am assuming that youmasturbate to ejaculation. Doing this 3-4 times per week will keep your libido (desire for sexual activity with your female partner) pretty much at zero. This is not a good thing if you are serious about your relationship and if you really care about her pleasure, her happiness and sexual fulfillment.

 
Experiment with no masturbation to ejaculation for one month and you will both notice a big change in your sexual desire, sexual vigor and sexual capacity. Then you can decide which you prefer, sex with your hand or sex with your lady. If you prefer sex with your hand, there is nothing wrong with that, but almost certainly there will be consequences, and that might well include your female partner losing interest in having sex with you and seeking a different partner elsewhere.

 
Yes, it is possible that frequent masturbation over a long period of time, especially if you were rough with yourself, that could cause damage to the erectile tissues in the penile shaft and this can result in a permanently crooked penis.

Popularity: 14% [?]