First of all there is no such thing as a het mojave...whoever told you that was BSing you and I hope you didnt pay extra for it..
Also, I hope you have a top on your tank and that it is secure.
Second judging from your username, you're going to school at the U of I: Urbana-Champaign? If that's right then walk yourself over to sailfin pet shop and get a thermostat and a UTH today...it's within walking distance of campus and it's right on neil street(just south of green st.) I just graduated from UIUC last may so that's why I know..and I still live in Champaign. After you've done that make your way over to Lowes on Prospect and buy an accurite indoor/outdoor thermometer(best there is in my opinion and only like $8) so you can monitor your temps and humidity. Also review the caresheet on this website and make sure your conditions are correct and stable over the next few days.
Also since this is your first post, Welcome! Congrats on your first BP and if you have any more questions please ask them!