On my 2nd and 3rd shot I felt an increase of energy and sex drive.Of course about 3 days before each shot I have a crash but the next shot picks me back up.However I got my 4th shot a week ago and felt nothing.I felt the needle go in but still haven't got the energy and drive back up.I feel like I'm still in crash mode.

Sorry, but you'll have to be more specific... shot of what?