well, we are also TTC for abt 6mon(march) with no luck. i used pre-seed lub for 2 months, but that didnt work as i expected. But b4 i brought pre-seed, i went thru alots of success reviews. may b who knows that may b work for you. so i will still recom pre-seed lub over other lub like KY. Ovulation prediction kits are helpful. you can aslo use an online ovulation calender(google) that will gives you your most fertile days acc to your cycle. well, most of my tests came as normal, so just curious about my husb sperm counts, so we aare going to do a semen analysis after 2 weeks. Hope it comes out normal. Good Luck to you n' sending alots of baby dusts:)
Using an ovulation predictor kit can help you make sure you are having intercourse on the highest fertility days. Also, be careful of lubricants and saliva - both are harmful to sperm. There are a few lubricants out there like pre-seed that does not kill sperm. You could try taking your basal body temperature also, that can give you a lot of information about your cycle. Best of luck to you!
It can take awhile even for a young, healthy person. Don't worry, just give it time. I think they say the average is 10-12months. Good luck.