Oregano oil

I was recently diagnosed with SIBO and IMO. I decided while I wait for the inevitable insurance battle to cover the antibiotic used to kill SIBO, I’d try Oregano oil. I didn’t expect to feel die off symptoms with one pill. Within an hour I felt stomach cramping, had hives and belching. At first I panicked because I had no idea why I was having what felt like a bad flare with hives (I hadn’t eaten anything to justify it), then I googled SIBO die off symptoms and saw that you can get a rash or hives while experiencing it and knew that’s what was up. It’s not a particularly high dose of oregano either, but it’s like the smell was leaking out of my mouth and nose. Has anyone found that Oregano oil helped their SIBO? Natural cures never seem to work for me, but this definitely seemed to upset it.