Hi, this is called premature ejaculation. It can be treated by more frequent intercourse, diverting your mind during sex, start and stop technique and other methods. At times medications may be needed to tide over the problem temporarily. After ejaculation, second erection usually takes about 30 minutes or more. So this is normal.

Hi, its know as ED, erectile dysfunction. U will require proper treatment for it. U can visit to start treatment.