No Orgasms From Intercourse?

I lost my virginity to this guy 4 months ago so obviously he's the only one I've ever had sex with. I've masturbated before and I think I've orgasmed from clitoral stimulation, but I haven't orgasmed from having intercourse. The sex feels amazing but it doesn't last that long and I don't orgasm. So my question is, how long does it take for you to orgasm from intercourse with your man?