Is it common for gravid females to eat when offered food?

Two of my females have been paired with a male since early November. I've witnessed locks for both. Their last sheds were in November and they went off feed in late December, early January. They both recently shed and have eaten for the past two weeks straight. This is my first attempt at breeding so I'm not experienced yet with witnessing ovulation or palpating. Is it common for gravid females to eat or are they not gravid? I've noticed that one is a bit bigger in girth then the other but I'm not sure if that is due to her recent meal or not.

Thanks in advance.