Forevernever, If you still orgasm the same when you masturbate, something changed during sex. Something changed in the positions you use or you started taking some medicine/drugs that affects your ability to orgasm. This can be as simple as an anti-depressant, anti-histamine or birth control hormones.
Orgasmneva, The same question also goes for you. You never had an orgasm by yourself or from oral sex? If that is the case you suffer from primary anorgasmia. Primary anorgasmia is treated very successfully with a technique called 'guided masturbation'. Without solving the problem yourself, your husband have no chance in helping you.
It is like thinking up a new recipe. If you do not make and test it in your own kitchen first, you cannot give it to somebody else and expect it to work. Until you make it successfully by yourself, nobody else will be successful.
Masturbation is your own personal sex laboratory where you can experiment and refine, without causing any harm to anybody or anything. And it is healthy and educational for you. Once you figure out how to orgasm, you can take that techniques into the bedroom and help your husband to get you there.