I’m freaking out. Used hydrogen peroxide to help with canker sores and now I have sore, almost burning gums. Help!

I was diluting 3% hydrogen peroxide with water for a few days but I think I may have overdone it. Now my gums are sore, feel burned, and I can barely eat. There are white spots around almost looks like blisters. Do I need to seek medical care or will this heal?

I was diluting 3% hydrogen peroxide with water for a few days but I think I may have overdone it. Now my gums are sore, feel burned, and I can barely eat. There are white spots around almost looks like blisters. Do I need to seek medical care or will this heal?