Ok so i have mouth ulcers (they arent exactly medically diagnosed. but... bear with me) i have been veg for 4 months. i looked it up and a change in diet can cause them. my mom seems to think that it is cuz im a veg. has anyone ever had these b4? i know it cant be from lack of Vitamin C cuz i take a multivitamin w/ 100% VitC in it every day. plz help me!!!