Canker sores on 4th MC

Today is day 11 of the 4th Master-Cleanse (22/20/10). On day 9, I started feeling a sore throat. Yesterday, throat still sore, I looked in my mouth and discovered that I have numerous canker sores around my gums, under my tongue, and on the back of my throat.

I had planned to begin breaking the fast today, and for the rest of the week (after the soup), eat in preparation for doing a Liver Flush this weekend.

However, upon realizing that I had canker sores, and reasoning that, since I've never gotten canker sores on any prior cleanse, perhaps they are a detox symptom, I decided to continue the cleanse for another day or two and see what happens.

I then did a "canker sore" search on curezone and confirmed that lemons are indeed a trigger for them, and also found a post that said they can be brought on by stones in the liver bile ducts.

So now I'm debating with myself about whether to stay on the cleanse and take it day by day; or stick with my original plan.

Has anyone else had a similar experience with canker sores on the cleanse and/or do any experienced cleansers have any thoughts / feedback / input?

By the way, my boyfriend and I embarked upon this cleanse together (his first). I posted previously about a cleansing crisis he had - with the help of the ginger tea, he completed his 10 days without further major problem, felt great, eliminated a lot of crap, and is very excited about moving into a healthier eating style! Thanks to those who responded to that post!

Best,
deni