Even though your prolactin level is in the normal range, your dopamine may be screwed up due to taking the prami throughout. So the prolactin may still be overpowering dopamine, leading to depressed sexual interest. That's the logical deduction assuming that the bloodwork results are accurate.

I would recommend getting some n-acetyl-l-tyrosine powder (NALT). To make dopamine, the body requires L-Tyrosine, and N-Acetyl-L-Tyrosine provides the body with a highly bioavailable form of L-Tyrosine. The enzyme Tyrosine Hydroxylase transforms plain Tyrosine into L-Dopa.

Taken and altered via DOPA decarboxylase, L-Dopa transforms into dopamine, You could probably find it fairly cheap as a bulk powder on amazon or eBay. I've seen 100g for $9. I'd recommend 500mg once or twice a day. Not too close to bed as dopamine can convert to norepinephrine as well.

You might also try Mucuna Pruriens extract, also known as cowitch and velvet bean, which contains naturally occurring L-Dopa. I personally have never noticed any effect from Mucuna, making me wonder if it's orally effective, but many people seem to think it's good, so that may just be me. If you want to send a FR, I can PM you the source where you could get either of these if you have any difficulty, although they should be easy to find. Good luck!