BlueRose
It sounds like you've developed IBS. For some people, it means alternating between constipation and diarrhea. The gurgling could be excessive gas (another common problem with IBS). I'm not sure what the intestines feeling like they are on fire is all about but sometimes during a diarrhea cycle, you can have pain in your large intestine.
You can try eating 2 teaspoons of flaked coconut a day. I have IBS-D and read about this remedy in an on-line newsletter I get that's about digestive issues. It said flaked coconut helps with the diarrhea. So...I figured I had nothing to lose and gave it a try. Much to my amazement, it helped tremendously!
Do you still have your gallbladder? If not, gallbladder removal can exacerbate diarrhea. There is a medication that helps with that. If this applies to you, post back and I can tell you more about that med.