Fertility can be complex, and I'm sure you know the statistics, the man often accounts for a larger portion in the failed conception reports......and sperm counts are generally much lower in your average male today than 15 years ago...
The GOOD news is if you are running cycles, your body fat is lower (hopefully) so you are unlikely to encounter estrogen issues while running hCG (though is still possible) , which is good from a fertility standpoint...you want estrogen in check obviously or you will have reduced fertility.
In addition, you could try
swedish flower pollen which is a well-known fertility supplement, famous for enabling one to shoot "the ropes".
hCG has a pretty good safety record, and definitely needs to be a part of that regimen...and although SERMs such as clomid may help, they also can make the situation trickier, being that they often have un-announced negative effects on the estrogen balance.
Also, some esters/forms of testosterone may have different effects on fertility, testosterone undecanoate, and proviron, are both known to actually INCREASE sperm count, generally, but this is also dose-dependent and
I am not necessarily advocating the use of these compounds as fertility treatments...
just demonstrating the differences between compounds.
http://www.ncbi.nlm.nih.gov/pubmed/8462190
http://www.ncbi.nlm.nih.gov/pubmed/2892728
Alpha-blocker drugs, used for benign prostate enlargement, and for high blood pressure, are also shown to increase fertility;
http://www.ncbi.nlm.nih.gov/pubmed/9406835 - the mechanism is probably to do with their noted anti-stress effect and a direct effect on leydig related enzymes. Moreover, alphablockade may enhance natural test production by shifting adrenergic activity towards the beta-adrenergic receptors; resulting in enhanced steroidogenesis.