It may all be the power of suggestion from the different websites and books I'm reading, but I dont' really think so. Since I got pregnant, my fingernails have gotten stronger and are growing much faster than I've ever known them to. I never had great fingernails to begin with, and they were always kinda weak, and it'd be weeks ( I think ) between clippings. But now it seems like I need to do them every few days or at least once a week because they mess with me doing everyday stuff.
That said, I'm enjoying my stronger nails while it lasts.