Monthly Cycle
Days before menstruation, you may notice red, swollen or bleeding gums, maybe a sore inside your cheek or a canker sore around your mouth. Thanks to a boost in progesterone, which dilates blood vessels and increases inflammation, some women experience gingivitis symptoms just before their periods or at ovulation. The good news is that these symptoms frequently clear up once the period starts, and there are ways of protecting gum tissue and lessening the irritation if symptoms reoccur every month.