If you are asking about orgasm, it definitely means you haven't had it before.
It is like LIGHT. If a blind man ask someone who has eyesight, "What is Light?", chances are (if he is not a philosopher, or a religious bible study scholar or someone out to screw your mind) then he is definitely blind.
You are not doing anything wrong.
What you need to do is explore alternatives.
I am guessing your husband is not experienced or has premature ejaculation and hence not meeting your sexual needs with the appropriate foreplay and mood setting. Try,
A) Use your finger and explore your clitoris in a private and conducive setting. ALONE.
B) Try using the shower head and spray on your pussy as you sit relaxed on a plastic chair in the bathroom or in the bathtub. Aim it directly onto your clitoris and do it even if it feels very tensed and uneasy. You may feel like you are going to explode, about to die, about to urinate. Don't worry, just carry on and let the tension build up until you scream at your release.
C) Buy a bullet vibrator (abt USD 8) and place it on your clitoris until you know what you really know is an orgasm. You will know it when you experienced it.
2) Get your husband to explore you.
A) Shave or Wax off your pubic hair and have your husband lick your clit over and over again till you explode.
B) Let him play together with you using a vibrator while he is penetrating you.
3) Find an experience person. (This may not be a good alternative but if all else fails and you are still frustrated...)
A) Another female who will teach you how to masturbate.
B) Another female who will perform cunnilingus on you.
C) Another experienced male to show you how to achieve orgasms.
There you go... All the possibilities... and I am guessing you have access to DVD's of porn or websites to go to, to bring you up to the mood.
www.boysfood.com for short clips of video. Please note, they are actors and can sometimes exaggerate sex.
www.literotica.com for reading and putting you into the mood and is written by oversex guys and gals dreaming of fantasies and coming up with weird themes.
Take your pick and choose well.