It seems that your Snow doe is pregnant. It is a natural phenomenon. Rabbits give birth a lot. You can find out by yourself if your rabbit is pregnant or not. Its procedure is gently touching the lower abdomen of your female rabbit with your thumb or forefinger.
If it is pregnant you will find marble sized bumps there. They will be there on the lower half of the abdomen. Its pregnancy will last till 28 to 35 days. If you see any abnormality in your doe, consult a vet because it is a sensitive time for it.you should take extra care of it.