ball python has pink belly but is not sheding?

i have the herpstat thermostat probe on the tape and it reads 90 degrees so i dont think it is a burn eather... i have no idea what is causing it..

Pink belly means its going into shed soon. When was the last shed?

before i had her.. at least 3 weeks.. how long will she have pink belly before shed? my other ball had pink belly then like 2 days later had grey eyes.. she still does not have grey eyes..

It varies from BP to Bp, but it usually takes about a week to go from pink to start of the shed cycle. The BP's eyes will go blue... then the BP will actually start to look normal again. a day or so after that your BP will shed. all in all it takes about a week once the BP's eyes go blue.