Orgasm is missing here ?

I have has sex a lot & with different people. Not once have I ever had an orgasm. I'm not one to "please" myself and the closest I think I get is when I get this throbbing down there certain times mostly when I'm getting "eaten out" but I really am lost. It's a good feeling but I never get the pleasure that I'm giving which is disappointing. Any help or ideas or input?