Help. California Kingsnake not growing.

[barbicrash]

Thanks for all your help. I will definitely buy a thermostat and see if that helps. I will keep everyone posted on the status. Quick question though (sorry, I'm full of questions lol) if sickness is the issue, is regurgitation a sign of a serious illness or is that something that happens with many scopes of illness. Like should I be expecting the worst or is this a common problem with snakes?