Pre Mature Ejaculation is common problem and more than 90% times due to stress , fear and fatigue. Ideally active intercourse sustains for 1.5 to 2 minutes. the duration which we see in porn movies is a myth. There are tablets which may help you but i advice you to try non medical intervention to deal with pre mature ejaculation.
Next Steps
Masturbate before 2-3 hours of sex. Also use condoms to avoid direct contact of hypersensitive glans with Vaginal wall.
Health Tips
Tablet Kutub Maxx 30 but dont take it without prior consultation of sexologist.