Your secrets to get pregnant

Ok ladies! I'm devastated. We are in cycle 9 of ttc baby #3. We have tried different positions, preseed, ovulation strips, bd every other day in fertile window, bd every day in fertile window, legs in the air for 30 minutes after bd-ing. I'm absolutely heartbroken and keep thinking something is wrong with me. My first two were both conceived in under 3 months. What are some of your tricks? I've gone to the Dr and she wants me to go through testing but it's damn near impossible since they only do it on Wednesdays and only on cycle day 10 or 11. I have never had cycle day 10 or 11 fall on a Wednesday in over a year and a half!!! I just need more tricks to try in the mean time I guess. Help please! Thank you in advance!