7 month old python maybe sick?

[ballpythongirl]

So, my boyfriend just found my 7 month old ball python, Cuddles in our closet, behind a box. She was only out of her enclosure for less than 2 days, but now her underbelly is a weird pinkish/tan color, instead of whitish which is normally is. Also, her underbelly is soft and squishy, not scaly like it normally should be. She has been constantly staying on her warm side of the tank, and hasn't gone into her hide since my boyfriend rescued her. Is she sick? HELP!