i cant have an orgasm.. help

This is really embarrassing for me. I'm 20 years old, married with 2 kids. I have never had an orgasm in my life. My husband has tried so hard, it just doesn't work. I cant make myself have one either, i've tried everything. He's bought me toys and it makes me really wet (tmi sorry) but never to that point. It's like it just wont happen. Sometimes it feels way too sensitive and i cant handle it being touched, or it'll feel very uncomfortable and almost like it tickles? I don't know how to explain it. I really want to experience one for the first time. I want to teach myself to have one so i can then learn to have one with my husband as well. Can anyone help me? It's seriously depressing everytime my husband has one and i cant