Frustrated

I am so frustrated, my boyfriend and I have been trying to get pregnant for over a year and nothing. I had a miscarriage last October and nothing since then. My periods are regular like clock work every month, I’ve tracked ovulation, used pre seed we’ve done everything that we’re supposed to do naturally. I’m starting to feel like something is wrong with me. I don’t get it. I had the IUD and it fell out and I had ultrasounds and x rays done and the doctors said my uterus looks healthy and stuff so Iduno what is going on. I’m extremely frustrated. Anyone else trying for over a year?