It has been 9 days since my first TC infusion. I did not start using a baking soda rinse as early as I should have. I foolishly believed I would not get any mouth ulcers since I usually don't get them. Since about Tuesday I have had ulcers on the underside of my lips top and bottom and I think under my tongue. I tried OraGel for mouth sores as well as some non alcohol mouth rinse. Both of these were a huge mistake made my lips and mouth burn way worse than before. The oncologist gave me a RX for the Magic Mouthwash. The first two times I used it I though ok this might work. The next time it set my mouth on fire and hurt for several hours. I also noticed my bottom lip swelled up a little. I am using a thin coat of vasoline on my lips to help.I have been doing the baking soda rinse off and on all day . It seems to help a little. I am not eating anything very hot or spicy or acidic. This stuff is miserable and I think is worse than the bone pain from the other medication. Does these ever go away or last a couple of weeks or what? I will not be using the Magic Mouthwash again it was just too bad. I think my mouth was just too inflamed already.Any suggestions would be appreciated.