PreSeed related to miscarriage??

I used PreSeed and it never worked for me so whenever I see a post about it I always click on it to see if it's worked for others. But whenever I see people asking about it I keep reading in the comments that lots of people had a miscarriage or chemical pregnancy after conceiving with PreSeed. So I looked on Google to see if I could find anything on it. I didn't realize that so many women had miscarriages after using PreSeed. Could this be a coincidence? I couldn't imagine lube (that's supposed to make you conceive at that) causing miscarriages. Just doesn't make sense. Are there any positive stories out there of using PreSeed and having a healthy pregnancy?