I have very sensitive skin on the inside of mouth. The inside of my mouth below my bottom lip is getting more painful and beginning to chap. This has been getting worse over the last two weeks. I ve also been noticing that I m tired and bruising easily for the last few months. Additionally, I have had a long standing problem with constipation and irregular periods. The periods wee controlled with birth control, but I have been spotting for a month the last few days I have had a decent flow, although much less than my usual, despite regularly taking the pill. I have been diagnosed with pcos by my ob and am seeing a reproductive endocrinologist to address fertility issues, but the tests ordered will not take place for a few weeks since they are cycle dependant. I am wondering if I may have an outside thyroid problem that has become exacerbated recently or if this could be a vitamin b deficiency from the metformin I take for pcos related insulin resistance. 1500/day. I have an appointment with an internist scheduled in a few days. A recent cross country move has left me between regular docs so I m confused at the moment. Any ideas? Thanks!