I can advice you to try home remedies first. For example, eat ginger, asparagus and try out thicker condoms. If they don't help, look here other ways to fight premature ejaculation. The exercises from there helped me, and I believe help you. Have you consulted doctor? I won't advice you to take any pills if you're not sure about the reason of your problem. May be you're in stress or it's something with hormones.