Good probiotics?

I’m searching for the best probiotic for women ttc. Idk if it makes a difference or not lol. I’m on metformin and even with being on the XR version, I’m always super sick. I also can’t keep capsules down. I have a motility issue with my throat so they ALWAYS break, so that just adds to the struggle for finding a good one. If anyone has any suggestions I’d be super thankful!