We were very lucky as it only took us for months of trying.
The first 3 months we took it like a military operation: checking when I was ovulating, DTD on those days and after frantically, sticking my legs in the air after sex for 30 minutes etc! My OH (who loves sex!) actually got turned off it and we both agreed that our sex life was no fun any more and it was beginning to be stressful!
The last month we tried, I started taking pregnancy vitamins, and also relaxed with the military operation of getting preggo! We had sex when we wanted, stopped checking if i was ovulating and just went with the flow, and surprisingly I became pregnant!
It's true what they say: relax and not stress!