Hi, I have a problem that I would like to get cured. During sex, I ejaculate in around 15-20 seconds max, which is very less. I have tried different positions, durex long pleasure condoms, etc, but they don't seem to help as well. The foreplay is ok, but the sex part is what troubles me. I can see that due to this, my wife is not happy as well. Can you suggest what to do?