Sorry to hear you've been struggling for so long. I accidentally got pregnant twice, however when I finally decided to plan a baby it wasn't as easy as I thought. Fortunately here in the US you can get fertility testing done within 6 months of TTC. For me, all the tests came back showing that i was perfectly healthy and everything looked great. I had been taking the OTC fertility supplements which didn't seem to do anything for me. Then one month I decided to try using pre-seed. I only used it once and I guess it worked because I got pregnant that cycle. I've never had issues with being lubricated,which could suggest that it was related to male factor infertility. My husband didn't get his sperm tested but he is always taking hot showers and using hot tubs which i recently found out can drastically reduce sperm count. Anyway, that was just my experience. 12 cycles is a long time to TTC. Maybe a short break would do you some good. I wish you the best of luck!
m2b