Miscarriage

Hi! OK so within the last year I've had 2 miscarriages. Ran some test doctor said nothing was wrong, which is frustrating because I feel like if we found a problem wed be able to find a solution. She told me I was just having "bad luck." So, I started doing a ton of research and reading and I've found different supplements that are to "help" maintain a healthy pregnancy. I'm taking Rainbow prenatal with Probotics and superfood/cassava root/ baby aspin/ Co enzyme q10/ L-arginine/ Dhea/ Dha. Anyone else try the fertility cocktail of supplements? Or have others they swear by? I will say I've been doing this for about a month and I'm less tired and my hair is growing (Which it BARELY grows)