Hello, I've had three losses (all conceived on clomid plus injectibles), and am now in the third trimester of a pregnancy conceived without any drugs. So there is hope! Also... all my miscarriages were unexplained, and had testing and everything came back fine.
After a year of not getting pregnant after our last miscarriage, I was devastated and we didnt have any more money for fertility treatments, so needed to take a break. I decided to do baby aspirin, Brazil nuts, and I also started cutting back my carb and gluten consumption considerably. And we managed to conceive that cycle! I have no idea if any of those things contributed as I've always come back clear for clotting disorders too, but I figured didn't hurt to try.
Also, when I got my BFP, my fertility doc put me on progesterone right away, just to be safe. (I've been on it with all my pregnancies though).
Good luck!