Shouldn't I be worried or not?

[dakski]

No, I haven't been able to find in my budget yet

Not good. If you can't afford thermostats now, which again is not good, at least get dimmer switches for a few bucks at Home Depot, etc. You absolutely need to regulate the temps and make they do not get too hot!

Dimmers have to be adjusted all the time and are far from ideal, but at least you can keep from FRYING/BURNING your animal.

Also, do you have a heat gun and know the temps at the surface?

For future reference, make sure you can afford what the animal needs before you buy the animal. Not trying to be harsh, but a sick animal is much more expensive than a thermostat. Remember, reptiles rely on us for everything!