I've tried so long I've pretty much given up.
I'm 35, never been pregnant. My cycles are more regular now, but our sex life had taken a dive.
I've heard Vitex works pretty well. They also have a pill called FertilAid for women and one for men. There's a lube called PreSeed that is supposed to be helpful.
Plus go to http://twoweekwait.com
there's a lot of support there.