Never orgasmed with husband!

I’m getting really frustrated that I have never had an orgasm with my husband. We have been together for almost 16 years! He’s not the problem I am! He does everything right and he’s very good in bed but for some reason I just cannot cum! I can by myself (not penetration). But I can’t even do it myself in front of him! When I’m alone I watch porn and I can get really turned on and make myself cum. But I can’t feel that turned on with my husband, even if we watch porn together. I don’t know what’s wrong with me! Why can’t I just relax with him!

Edit- I forgot to say we do use toys, all different toys!