Is my snake sick?

I'm a brand new snake owner and I just got a female ball python. I think it's a female, she/he has yet to be prodded. She's full grown and got it from a kind of questionable owner. I've noticed something that I didn't when I first got her. Near/on her tail area, in the middle of her stomach, it turns slightly brown yellowish, there's a line and the scales don't look well. She acts and kind of eats alright. She ate at first, but after she stopped eating probably because I'm a new snake owner and still working stuff out, but it might not be. Is my snake sick?

Try posting some pics of the area in question. That may help

http://karmahurts911.deviantart.com/...41608#comments

How long have you had her now? It sounds like a burn but post a picture so we can get a better idea

http://i1381.photobucket.com/albums/...pscylfi3oe.jpg My laptop.

Looks like a burn. If you are using an under-tank heater is there a thermostat regulating it, or is it just plugged in to the wall outlet?

Plugged into the wall, I thought it'd be alright without one. I'll get one the next time I stop at a pet store.

Unplug it right now and dont plug it in until it is regulated

Sent from my A521L using Tapatalk

Yeah, I agree. They get a lot hotter than you might think. I'd unplug it and find a thermostat. It doesn't look that bad in the pic but you don't want it getting worse. You are by no means the first to have this happen.