Hi, I agree mostly with Dr. Sattar said. I only add that
PE ( premature/early/quick ejaculation) is inborn for most men and yet can be overcome by a combination of medicines and "learning". You can learn through masturbation, to stay longer. You can also learn after marriage/in a longterm relationship by learning stop start or abhisarika technique.
You should also remember that occasional sex, new partner, exciting or tense situations always cause PE.
PE is not a disorder. Its a condition.
Veins bulging on the penis is not a problem at all.
Next Steps
Consult a sex counselor/therapist near you