DD has been teething - as in swollen gums, irritability and waking every 1-2 hours, but no actual teeth - for the past 4.5 months. In the past week, two spots on her gums, over the molars, have become extremely swollen. It almost looks like an abscess. Is that normal? I think she must have terribly tough gums or something... seems to take forever for the teeth to push through.