You were fasting too much. /r/carnivore recommends aiming at 2lb a day of fatty meat. Undereating is a crazy common failure mode when people think they are doing carnivore but it's actually littlevore.
There's a huge number of women immensly benefiting from high-fat carnivore. Mikhaila Peterson, Steak and Butter Gal, Kelly Hogan, Eleanorina... to name a few.
