Body is heavily shaking, but no feelings of pleasure or bliss

Hi Guys , i need Some advice
Some months ago, I got my first Aneros Helix Syn. And I have been playing with it approximately once every week. Untill Now I’ve several times reached the point where my whole body was heavily shaking involuntarily as described by many guys as part of the Super O. So I’m pleased with that, however I have no pleasurable feelings when this occurs, no feelings of bliss. Will this grow in time, or am I something doing wrong?
Please advice.