A bit of backstory:
I'm a 17-year-old female with hypothyroidism (diagnosed about three years ago, but untreated as of yet; I inherited it from my mother / grandmother). I'm not sexually active. I have no known allergies. It's not my toothpaste.
Now to the point of the post:
Generally, in a year, I get canker sores for about a week once; however, lately I've been attacked by canker sores - I had nine in my mouth at one point for two weeks. They seemed to be going away but when I woke up this morning, I had four new ones in my mouth.
I don't believe it's something I ate; my diet hasn't changed in the last while.
Is there any reason for these canker sores to be dominating my mouth lately? and could my hypothyroidism contribute to it?