Wow, I didn't know it was a category C. That's actually worse than Remicade which I know was a C and is now a B. I should have done more research. All I did was look at one Low Dose Naltrexone website, and it didn't list a rating, it just said it was not harmful for pregnancy and actually beneficial. But I don't think it listed any statistics. That's kind of why I posted the question here as opposed to a LDN website, because I was hoping there was less bias here.
Thanks for your input, Writer. That is helpful.