From what I've read, it seems that the most important steps are to be in the healthy body composition range (not too much body fat and just as important, not too little), and to be eating a balanced diet. When we were getting ready to start trying with both of our pregnancies, these were my main concerns. I also switched to full-fat dairy products (lactating cows pass on some helpful hormones, but they are passed on in the milkfat. If you're concerned about other things being passed on in the fat, you may consider switching to whole, organic milk products while you're trying) and avoided pthalates in my toiletries, etc. I wish I could help more, but honestly, I'm not sure if these extra things helped or not. We got pregnant the first month we tried both times, so maybe they did, or maybe I'm just naturally very fertile. My heart goes out to you. I hope things work out!
Always try to bring a spare set of clothing when you dream about going to work or school. That way, if you encounter someone having that dream where they show up in their underwear, you'll be their hero.