Hi,
This is a health issue to be evaluated by a urologist as there are many contributing factors responsible. Some times, simple health improvement is all that is required and at other times, a little bit of confidence building and mental relaxation. Also, medications may be required in some cases, have a look at he following link for example :
http://www.medicalnewstoday.com/releases/25103.php
So, please consult a urologist for necessary help.
Solace
I have been told you can build up your stamina. Might have to ejaculate as often as you can for awhile.
hi,premature ejaculate before 18 is common it ejects automatically because it is natural.if u are still worried then go to doctor