Sounds just like the typical healing symptoms to me. Any area of your body requiring healing will worsen during healing and it can go up and down for weeks on end. You'll think yu're mending oneday and you'll be worse again the next.

So i'd not be too concerned, but go easy on the oregano and concentrate more on the diet, which is actually the main one to heal you. The other stuff is complimentary and secondary.

Just from what I've read and learned, though I am no professional.

take care and hang in there, seems like you're onto the right road, though it's not an easy one. patience and persistance are required, along with no cheating on diet. It's tough, but necessary.