Re: Weight gain
Are you sure you're reading the scale right? 1.2oz is about 35g, which is ... impossibly tiny. Our 4-week-old babies are about 100g, to give you an idea. I'd suggest weighing in grams. Hedgehogs only get to be about a pound, give or take, and weighing in grams gives a much more accurate idea of weight changes.
As for whether she's pregnant, you really can't know that based on weight. Weight gain at that age can easily be because she's still growing, but any new hedgehog, even an adult, can gain weight when it's in a new home if it came from a not-great situation with a not-great diet. If she was housed with a male for any amount of time, you should just assume she's pregnant and take the necessary precautions.
USDA licensed breeder in Port Orchard, WA.
Volcano View Hedgehogs