There is no way, without any of us being able to see you in person, to know whether or not your big calves (if you have them) are mostly muscle or fat. People have big calves for different reasons-muscle, fat, and a third possibility is a larger bone/skeletal structure in the calve area.
For me, personally, I have big calves. In my bone structure, I have a smaller framed upper body (skeletal wise) so I have smaller framed shoulders, small hands, small wrists, small waistline, slender neck, etc. However, I have wider hipbones, larger calves, and larger ankles. Even when I was slim as a child, I never had, and will never have, those little toothpick ankles like some people have. It simply is not in my bone structure.
Some women can bulk up more naturally, but it is really not that common...and the calves are NOT the indicator. I lift weights, as well as walk, Pilates, yoga, and Middle Eastern dance-and I am not bulking up.
Start weight after baby #3: 233.9
Current weight: 143
90 pounds lost!