I'm so sorry you miscarried. We've dealt with infertility for 15 years, and in all those years, I don't believe I ever became pregnant.
As someone else recommended, Dr. Lee's materials are very informative, especially for understanding how hormones work together. I've used progesterone cream (I have PCOS), and it helped me to have regular cycles, but didn't aid ovulation.
Are you taking essential fatty acids? Like iodine, they help with hormone receptors, as well as many other things.