You need to unplug your heater immediately if you aren't using a thermostat. You're risking serious burns or worse to your animal running a UTH unregulated.
Also, read the stickies on this forum and get your setup and husbandry on point.
You're going to want to leave your new pet alone for the meantime while you get everything all set up. You want your snake to get settled in and eating prior to doing much handling, if any at all. I personally like to get my snakes to eat 3 consecutive meals without refusal before doing much handling.