Lurker chiming in, but I was on spiro for cystic acne a few years ago, and I was told by both my dermatologist and OB to stop taking it before TTC. I would suggest talking to your doctor again and/or seeing a specialist who might know more about the risks and benefits of taking this while pregnant.
Absolutely 10000% this. My doctor wanted the spironolactone out of my system 3 months before I started TTC. It is in category C. I would definitely ask for a second opinion.