I have a 3-4 yr old female (?) boa that has gotten an increasingly more and more pink belly for the past several months. I checked my heat pad against a friends and mine was a little too warm. I always clean her aquarium as soon as I can after she messes it (and these days she messes it big), but there are some days where she has sat in it for hours before I came home again. She is about 7 feet long and 18-20 lbs. She lives in a 75 gal tank for now with paper towels as substrate.
I dont know any other info to give. Can anyone help me with this?

