Conceive Plus® is an FDA cleared fertility friendly, personal lubricant that is formulated to be isotonic and meet a pH range compatible with human sperm survival and migration. It is clinically proven to not harm sperm function. Since it is clinically proven for their effect you should get positive results out of it. Lots of couples has successfully benefited with this. But still if you are not getting benefits, then it could possibility of any other reason behind this. You preferably consult with your doctor. You might not be using it properly and your doctor will help you to tackle the issue. Best of luck.
We were also TTC for a while. We were totally laid back initially, but as the months passed we got progressively more regimented. The key for us was to figure out the exact ovulation date and then to time intercourse around that. Learn the basics first, e.g. on http://human-fertility.com/calculating-ovulatio... and once you have your timing nailed and you're still not getting a BFP talk again to your gyno. tongue