Do you drink alcohol? As much as I love beer, it seems that there is nothing that knocks my dick in the dirt quicker than drinking. When I take a couple of weeks off from the beer I notice a big difference in my libido. Understand that this works this way for me even while on enanthate. The alcohol does effect my libido in a negative way....& it doesn't seem to matter if I drink just a few or alot. If I'm drinking I like to have some cialis or some viagra on hand. Proviron combined with test will kick your libido into overdrive too.
This is just how it effects me though, I know it doesn't effect everyone in the same way. Also...2 weeks isn't long enough to feel a difference like some of the others said. Give it a few more weeks.