Hi! We are new leopard gecko owners. Our son got his little girl in December, she’s like a white & yellow leopard gecko. She was still pretty small when we got her, so we assumed very young. Recently we noticed her front foot/ankle joint swelling, almost like an abscess. She had just shed, so we assumed possibly it was due to a “bad shed”. Fast forward a few weeks, it’s still there and another white looking spot underneath another joint, on a different leg. She eats mealworms dipped in calcium, we leave a small bowl of calcium out for her as well. She has a heat mat, UVB lamp. We can’t find much online as far as what it could be. We would greatly appreciate any help, as to what this might be. I will attach photos. Thank you!