also my organ is too small just 4 to 5 inches...
Hi kukurama,
I don't see how doing wrong in childhood could be the cause of your problems.
It is always possible to re-train yourself to last longer before ejaculating. Are you saying you ejaculate 15 seconds after penetration, or is it when masturbating?
If with a partner, at your age, you should find that if you continue kissing and caressing, including a lot of attention to her clitoris (as long as she likes that) you will be able to have a second penetration, which almost certainly would last longer before ejaculating.
4 to 5 inches is perfectly OK for penetration. If you are heterosexual, women's sensitivity is best near the outside of their body anyway.
As to your hardness, this will return if you take everything slowly with your partner before attempting penetration, especially if she is willing to do oral sex on your penis.
Have you gone to a doctor to find out why your penis has not fully grown at age 18.
My penis is 4 and one half inches when I am erect, but my testicles are the size of hazelnuts. I also have 47 chromosomes and have. Klinefelters Syndrome. Some men with xxy chromosomes may have larger ones but this is something I was born with.
There is no known pill or exercise that will make it longer. During puberty, a doctor may have given you medication which may have increased your penis size,but nothing you did when you were younger could cause you to have a small penis. It is impossible to shrink your penis by yourself.
I hope you ask a doctor.
I am not a doctor.
Doctors see penis sizes from smaller than 3 inches to very large ones, so don't be embarrassed about talking to a doctor about your problem.
Please see a doctor soon.