I’ve had a canker sore since Friday and I will not go away. I get them frequently (I think I have an iron deficiency) and I usually take an iron supplement and it will go away within a day or two. This time I have taken iron supplements along with my prenatals and I am having no luck. I haven’t taken any pain medicine for it because I’m not sure what I can take so I have been miserable for days. Has anyone else dealt with this? What do you ladies suggest?